Skip to content

Tutorials
Courses

C++ Data Types
C++ Input/Output
C++ Arrays
C++ Pointers
C++ OOPs
C++ STL
C++ Interview Questions
C++ Programs
C++ Cheatsheet
C++ MCQ
C++ Projects
C++ Exception Handling
C++ Memory Management

Escape Sequence in C

Literals in C

Last Updated : 21 Jun, 2024

Comments

Improve

Suggest changes

Like Article

Like

Report

In C, Literals are the constant values that are assigned to the variables. Literals represent fixed values that cannot be modified. Literals contain memory but they do not have references as variables. Generally, both terms, constants, and literals are used interchangeably.
For example, “const int = 5;“, is a constant expression and the value 5 is referred to as a constant integer literal.

Types of C Literals

There are 4 types of literal in C:

Integer Literal
Float Literal
Character Literal
String Literal

C-literals

1. Integer Literals

Integer literals are used to represent and store the integer values only. Integer literals are expressed in two types i.e.

A) Prefixes: The Prefix of the integer literal indicates the base in which it is to be read.
For Example:

0x10 = 16

Because 0x prefix represents a HexaDecimal base. So 10 in HexaDecimal is 16 in Decimal. Hence the value 16.

There are basically represented into 4 types:

a. Decimal-literal(base 10): A non-zero decimal digit followed by zero or more decimal digits(0, 1, 2, 3, 4, 5, 6, 7, 8, 9).

Example:

56, 78

b. Octal-literal(base 8): a 0 followed by zero or more octal digits(0, 1, 2, 3, 4, 5, 6, 7).

Example:

045, 076, 06210

c. Hex-literal(base 16): 0x or 0X followed by one or more hexadecimal digits(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, A, b, B, c, C, d, D, e, E, f, F).

Example:

0x23A, 0Xb4C, 0xFEA

d. Binary-literal(base 2): 0b or 0B followed by one or more binary digits(0, 1).

Example:

0b101, 0B111

B) Suffixes: The Suffixes of the integer literal indicates the type in which it is to be read.

For example:

12345678901234LL

indicates a long long integer value 12345678901234 because of the suffix LL

These are represented in many ways according to their data types.

int: No suffix is required because integer constant is by default assigned as an int data type.
unsigned int: character u or U at the end of an integer constant.
long int: character l or L at the end of an integer constant.
unsigned long int: character ul or UL at the end of an integer constant.
long long int: character ll or LL at the end of an integer constant.
unsigned long long int: character ull or ULL at the end of an integer constant.

Example:

C

#include <stdio.h>  int main() {      // constant integer literal     const int intVal = 10;      printf("Integer Literal:%d \n", intVal);     return 0; }

Output

Integer Literal:10

2. Floating-Point Literals

These are used to represent and store real numbers. The real number has an integer part, real part, fractional part, and exponential part. The floating-point literals can be stored either in decimal form or exponential form. While representing the floating-point decimals one must keep two things in mind to produce valid literal:

In the decimal form, one must include the integer part, or fractional part, or both, otherwise, it will lead to an error.
In the exponential form, one must include both the significand and exponent part, otherwise, it will lead to an error.

A few floating-point literal representations are shown below:

Valid Floating Literals:

10.125
1.215e-10L
10.5E-3

Invalid Floating Literals:

123E
1250f
0.e879

Example:

C

#include <stdio.h>  int main() {     // constant float literal     const float floatVal = 4.14;      printf("Floating point literal: %.2f\n",         floatVal);     return 0; }

Output

Floating point literal: 4.14

3. Character Literals

This refers to the literal that is used to store a single character within a single quote. To store multiple characters, one needs to use a character array. Storing more than one character within a single quote will throw a warning and display just the last character of the literal. It gives rise to the following two representations:

char type: This is used to store normal character literal or narrow-character literals.

Example:

char chr = 'G';

Example:

C

#include <stdio.h>  int main() {     // constant char literal     const char charVal = 'A';      printf("Character Literal: %c\n",         charVal);     return 0; }

Output

Character Literal: A

Escape Sequences: There are various special characters that one can use to perform various operations.

4. String Literals

String literals are similar to that character literals, except that they can store multiple characters and uses a double quote to store the same. It can also accommodate the special characters and escape sequences mentioned in the table above. We can break a long line into multiple lines using string literal and can separate them with the help of white spaces.
Example:

char stringVal[] = "GeeksforGeeks";

Example:

C

#include <stdio.h>  int main() {     const char str[]         = "Welcome\nTo\nGeeks\tFor\tGeeks";     printf("%s", str);     return 0; }

Output

Welcome To Geeks    For    Geeks

Must Read:

User-Defined Literals
Raw String Literal in C++
Octal Literals in C
Compound Literals in C
Type Difference of Character Literals C++

Escape Sequence in C

C

chinmoy lenka

Improve

Article Tags :

Misc
C Language
C++
C Basics
CPP-Basics

Practice Tags :

CPP
Misc

Similar Reads

C Programming Language Tutorial

C is a general-purpose mid-level programming language developed by Dennis M. Ritchie at Bell Laboratories in 1972. It was initially used for the development of UNIX operating system, but it later became popular for a wide range of applications. Today, C remains one of the top three most widely used

C Basics

C Language Introduction

C is a general-purpose procedural programming language initially developed by Dennis Ritchie in 1972 at Bell Laboratories of AT&T Labs. It was mainly created as a system programming language to write the UNIX operating system.Main features of CWhy Learn C?C is considered mother of all programmin

Features of C Programming Language

C is a procedural programming language. It was initially developed by Dennis Ritchie in the year 1972. It was mainly developed as a system programming language to write an operating system.The main features of C language include low-level access to memory, a simple set of keywords, and a clean style

C Programming Language Standard

Introduction:The C programming language has several standard versions, with the most commonly used ones being C89/C90, C99, C11, and C18.C89/C90 (ANSI C or ISO C) was the first standardized version of the language, released in 1989 and 1990, respectively. This standard introduced many of the feature

C Hello World Program

The â€œHello Worldâ€ program is the first step towards learning any programming language. It is also one of the simplest programs that is used to introduce aspiring programmers to the programming language. It typically outputs the text "Hello, World!" to the console screen.C Program to Print "Hello Wor

Compiling a C Program: Behind the Scenes

The compilation is the process of converting the source code of the C language into machine code. As C is a mid-level language, it needs a compiler to convert it into an executable code so that the program can be run on our machine.The C program goes through the following phases during compilation:C

The comments in C are human-readable notes in the source code of a C program used to make the program easier to read and understand. They are not a part of the executable program by the compiler or an interpreter.Example:C#include <stdio.h> int main() { // This is a comment, the below // state

In C programming, tokens are the smallest units in a program that have meaningful representations. Tokens are the building blocks of a C program, and they are recognized by the C compiler to form valid expressions and statements. Tokens can be classified into various categories, each with specific r

In C Programming language, there are many rules so to avoid different types of errors. One of such rule is not able to declare variable names with auto, long, etc. This is all because these are keywords. Let us check all keywords in C language.What are Keywords?Keywords are predefined or reserved wo

C Variables and Constants

A variable in C is a named piece of memory which is used to store data and access it whenever required. It allows us to use the memory without having to memorize the exact memory address.Syntax for Creating VariablesTo create a variable in C, we have to specify a name and the type of data it is goin

In C programming, constants are read-only values that cannot be modified during the execution of a program. These constants can be of various types, such as integer, floating-point, string, or character constants. They are initialized with the declaration and remain same till the end of the program.

Const Qualifier in C

The qualifier const can be applied to the declaration of any variable to specify that its value will not be changed (which depends upon where const variables are stored, we may change the value of the const variable by using a pointer). The result is implementation-defined if an attempt is made to c

Different ways to declare variable as constant in C

There are many different ways to make the variable as constant in C. Some of the popular ones are: Using const KeywordUsing MacrosUsing enum Keyword1. Using const KeywordThe const keyword specifies that a variable or object value is constant and can't be modified at the compilation time. Syntaxconst

Scope rules in C

The scope of a variable in C is the block or the region in the program where a variable is declared, defined, and used. Outside this region, we cannot access the variable, and it is treated as an undeclared identifier.The scope is the area under which a variable is visible.The scope of an identifier

Internal Linkage and External Linkage in C

In C, linkage is a concept that describes how names/identifiers can or cannot refer to the same entity throughout the whole program or a single translation unit. The above sounds similar to scope, but it is not so. To understand what the above means, let us dig deeper into the compilation process.Be

Global Variables in C

Prerequisite: Variables in C In a programming language, each variable has a particular scope attached to them. The scope is either local or global. This article will go through global variables, their advantages, and their properties. The Declaration of a global variable is very similar to that of a

C Data Types

Data Types in C

Each variable in C has an associated data type. It specifies the type of data that the variable can store like integer, character, floating, double, etc.Example:C++int number;The above statement declares a variable with name number that can store integer values.C is a statically type language where

In C, Literals are the constant values that are assigned to the variables. Literals represent fixed values that cannot be modified. Literals contain memory but they do not have references as variables. Generally, both terms, constants, and literals are used interchangeably.Â For example, â€œconst int =

Escape Sequence in C

The escape sequence in C is the characters or the sequence of characters that can be used inside the string literal. The purpose of the escape sequence is to represent the characters that cannot be used normally using the keyboard. Some escape sequence characters are the part of ASCII charset but so

The bool in C is a fundamental data type in most that can hold one of two values: true or false. It is used to represent logical values and is commonly used in programming to control the flow of execution in decision-making statements such as if-else statements, while loops, and for loops. In this a

Integer Promotions in C

Some data types like char , short int take less number of bytes than int, these data types are automatically promoted to int or unsigned int when an operation is performed on them. This is called integer promotion. For example no arithmetic calculation happens on smaller types like char, short and e

Character Arithmetic in C

As already known character range is between -128 to 127 or 0 to 255. This point has to be kept in mind while doing character arithmetic. What is Character Arithmetic?Character arithmetic is used to implement arithmetic operations like addition, subtraction, multiplication, and division on characters

Type Conversion in C

In C, type conversion refers to the process of converting one data type to another. It can be done automatically by the compiler or manually by the programmer. The type conversion is only performed to those data types where conversion is possible. Let's take a look at an example:C#include <stdio.

C Input/Output

Basic Input and Output in C

In C programming, input and output operations refer to reading data from external sources and writing data to external destinations outside the program. C provides a standard set of functions to handle input from the user and output to the screen or to files. These functions are part of the standard

Format Specifiers in C

The format specifier in C is used to tell the compiler about the type of data to be printed or scanned in input and output operations. They always start with a % symbol and are used in the formatted string in functions like printf(), scanf, sprintf(), etc.The C language provides a number of format s

In C language, printf() function is used to print formatted output in many ways to the standard output stdout (which is generally the console screen).Example:C#include <stdio.h> int main() { // Using printf to print the text "Hi!" printf("Hi!"); return 0; }OutputHi!Explanation: In this program

In C, scanf() is a function is used to read data from stdin (standard input stream i.e. usually keyboard) and stores the result into the given arguments. It is defined in the <stdio.h> header file.Example:C#include <stdio.h> int main() { int n; // Reading an integer input scanf("%d",

scanf family functions support scanset specifiers which are represented by %[]. Inside scanset, we can specify single character or range of characters. While processing scanset, scanf will process only those characters which are part of scanset. We can define scanset by putting characters inside squ

Formatted and Unformatted Input/Output functions in C

In C language, the Input/Output (I/O) functions are part of the standard library, and these functions are used for interacting with the user or other systems, to perform operations such as reading input and printing output. These functions provide ways to read data from files and other input devices

C Operators

In C language, operators are symbols that represent some kind of operations to be performed. They are the basic components of the C programming. In this article, we will learn about all the operators in C with examples.What is an Operator in C?A C operator can be defined as the symbol that helps us

Arithmetic Operators in C

Arithmetic operators are the type of operators used to perform basic math operations like addition, subtraction, and multiplication. Let's take a look at an example:C#include <stdio.h> int main() { // Calculate the area of the triangle int sum = 10 + 20; printf("%d", sum); return 0; }Output30E

Unary Operators in C

In C programming, unary operators are operators that operate on a single operand. These operators are used to perform operations such as negation, incrementing or decrementing a variable, or checking the size of a variable. They provide a way to modify or manipulate the value of a single variable in

Relational Operators in C

In C, relational operators are the symbols that are used for comparison between two values to understand the type of relationship a pair of numbers shares. The result that we get after the relational operation is a boolean value, that tells whether the comparison is true or false. Relational operato

Bitwise Operators in C

In C, bitwise operators are used to perform operations directly on the binary representations of numbers. These operators work by manipulating individual bits (0s and 1s) in a number.The following 6 operators are bitwise operators (also known as bit operators as they work at the bit-level). They are

C Logical Operators

Logical operators in C are used to combine multiple conditions/constraints. Logical Operators returns either 0 or 1, it depends on whether the expression result is true or false. In C programming for decision-making, we use logical operators.We have 3 logical operators in the C language:Logical AND

Assignment Operators in C

In C, assignment operators are used to assign values to variables. The left operand is the variable and the right operand is the value being assigned. The value on the right must match the data type of the variable otherwise, the compiler will raise an error.Let's take a look at an example:C#include

Increment and Decrement Operators in C

The increment ( ++ ) and decrement ( -- ) operators in C are unary operators for incrementing and decrementing the numeric values by 1, respectively. They are one of the most frequently used operators in programming for looping, array traversal, pointer arithmetic, and many more.Increment Operator i

Conditional or Ternary Operator (?:) in C

The conditional operator in C is kind of similar to the if-else statement as it follows the same algorithm as of if-else statement but the conditional operator takes less space and helps to write the if-else statements in the shortest way possible. It is also known as the ternary operator in C as it

sizeof operator in C

Sizeof is a much-used operator in the C. It is a compile-time unary operator which can be used to compute the size of its operand. The result of sizeof is of the unsigned integral type which is usually denoted by size_t. sizeof can be applied to any data type, including primitive types such as integ

Operator Precedence and Associativity in C

Operator precedence and associativity are rules that decide the order in which parts of an expression are calculated. Precedence tells us which operators should be evaluated first, while associativity determines the direction (left to right or right to left) in which operators with the same preceden

C Control Statements Decision-Making

Decision Making in C (if , if..else, Nested if, if-else-if )

In C, programs can choose which part of the code to execute based on some condition. This ability is called decision making and the statements used for it are called conditional statements. These statements evaluate one or more conditions and make the decision whether to execute a block of code or n

C - if Statement

The if in C is the simplest decision-making statement. It consists of the test condition and a block of code that is executed if and only if the given condition is true. Otherwise, it is skipped from execution.Let's take a look at an example:C#include <stdio.h> int main() { int n = 9; // if st

C if else Statement

The if else in C is an extension of the if statement which not only allows the program to execute one block of code if a condition is true, but also a different block if the condition is false. This enables making decisions with two possible outcomes.Example:C#include <stdio.h> int main() { in

C if , else if ladder

In C, if else if ladder is an extension of if else statement used to test a series of conditions sequentially, executing the code for the first true condition. A condition is checked only if all previous ones are false. Once a condition is true, its code block executes, and the ladder ends.Example:C

Switch Statement in C

C switch statement is a conditional statement that allows you to execute different code blocks based on the value of a variable or an expression. It is often used in place of if-else ladder when there are multiple conditions.Example:C#include <stdio.h> int main() { // Switch variable int var =

Using Range in switch Case in C

You all are familiar with switch case in C, but did you know you can use a range of numbers instead of a single number or character in the case statement? Range in switch case can be useful when we want to run the same set of statements for a range of numbers so that we do not have to write cases se

In C programming, there is often a need for repeating the same part of the code multiple times. For example, to print a text three times, we have to use printf() three times as shown in the code:C#include <stdio.h> int main() { printf( "Hello GfG\n"); printf( "Hello GfG\n"); printf( "Hello GfG

In C programming, the 'for' loop is a control flow statement that is used to repeatedly execute a block of code as many times as instructed. It uses a variable (loop variable) whose value is used to decide the number of repetitions. It is commonly used to iterate over a sequence such as an array or

while Loop in C

The while loop in C allows a block of code to be executed repeatedly as long as a given condition remains true. It is often used when we want to repeat a block of code till some condition is satisfied.Example: C#include <stdio.h> int main() { int i = 1; // Condition for the loop while (i <=

do...while Loop in C

C do...while loop is a type of loop that executes a code block until the given condition is satisfied. Unlike the while loop, which checks the condition before executing the loop, the do...while loop checks the condition after executing the code block, ensuring that the code inside the loop is execu

In C, loops are the fundamental part of language that are used to repeat a block of code multiple times. The two most commonly used loops are the for loop and the while loop. Although they achieve the same result, their structure, use cases, and flexibility differ.The below table highlights some pri

Continue Statement in C

The continue statement in C is a jump statement used to skip the current iteration of a loop and continue with the next iteration. It is used inside loops (for, while, or do-while) along with the conditional statements to bypass the remaining statements in the current iteration and move on to the ne

Break Statement in C

The break statement in C is a loop control statement that breaks out of the loop when encountered. It can be used inside loops or switch statements to bring the control out of the block. The break statement can only break out of a single loop at a time.Example:C#include <stdio.h> int main() {

goto Statement in C

The goto statement in C allows the program to jump to some part of the code, giving you more control over its execution. While it can be useful in certain situations, like error handling or exiting complex loops, it's generally not recommended because it can make the code harder to read and maintain

C Functions

A function in C is a set of statements that, when called, perform some specific tasks. It is the basic building block of a C program that provides modularity and code reusability. They are also called subroutines or procedures in other languages.Function DefinitionA function definition informs the c

User-Defined Function in C

A user-defined function is a type of function in C language that is defined by the user himself to perform some specific task. It provides code reusability and modularity to our program. User-defined functions are different from built-in functions as their working is specified by the user and no hea

Parameter Passing Techniques in C

In C, passing values to a function means providing data to the function when it is called so that the function can use or manipulate that data. Here:Formal Parameters: Variables used in parameter list in a function declaration/definition as placeholders. Also called only parameters.Actual Parameters

Function Prototype in C

In C, a function prototype is a statement that tells the compiler about the functionâ€™s name, its return type, numbers, and data types of its parameters. Using this information, the compiler cross-checks function parameters and their data type with function definition and function call.For example, l

How can I return multiple values from a function?

In C programming, a function can return only one value directly. However, C also provides several indirect methods in to return multiple values from a function. In this article, we will learn the different ways to return multiple values from a function in C.The most straightforward method to return

main Function in C

The main function is the entry point of a C program. It is a user-defined function where the execution of a program starts. Every C program must contain, and its return value typically indicates the success or failure of the program. In this article, we will learn more about the main function in C.E

Implicit Return Type int in C

In C, every function has a return type that indicates the type of value it will return, and it is defined at the time of function declaration or definition. But in C language, it is possible to define functions without mentioning the return type and by default, int is implicitly assumed that the ret

In C language, a callback is a function that is passed as an argument to another code, which is expected to call back (execute) the argument at a given time. In simple terms, a callback is the process of passing a function (executable code) to another function as an argument, which is then called by

Nested Functions in C

Nesting of functions refers to placing the definition of the function inside another functions. In C programming, nested functions are not allowed. We can only define a function globally.Example:C#include <stdio.h> int main() { void fun(){ printf("GeeksForGeeks"); } fun(); return 0; }Outputmai

Variadic Functions in C

In C, variadic functions are functions that can take a variable number of arguments. This feature is useful when the number of arguments for a function is unknown. It takes one fixed argument and then any number of arguments can be passed.Let's take a look at an example:C#include <stdio.h> #in

_Noreturn function specifier in C

In C, the _Noreturn specifier is used to indicate that a function does not return a value. It tells the compiler that the function will either exit the program or enter an infinite loop, so it will never return control to the calling function. This helps the compiler to optimize code and issue warni

Predefined Identifier __func__ in C

Before we start discussing __func__, let us write some code snippets and anticipate the output: C // C program to demonstrate working of a // Predefined Identifier __func__ #include <stdio.h> int main() { // %s indicates that the program will read strings printf("%s", __func__); return 0; } Ou

C Library math.h Functions

The math.h header defines various C mathematical functions and one macro. All the functions available in this library take double as an argument and return double as the result. Let us discuss some important C math functions one by one. C Math Functions1. double ceil (double x) The C library functio

C Arrays & Strings

An array in C is a fixed-size collection of similar data items stored in contiguous memory locations. It can be used to store the collection of primitive data types such as int, char, float, etc., as well as derived and user-defined data types such as pointers, structures, etc. Creating an Array in

Properties of Array in C

An array in C is a fixed-size homogeneous collection of elements stored at a contiguous memory location. It is a derived data type in C that can store elements of different data types such as int, char, struct, etc. It is one of the most popular data types widely used by programmers to solve differe

Multidimensional Arrays in C - 2D and 3D Arrays

A multi-dimensional array in C can be defined as an array that has more than one dimension. Having more than one dimension means that it can grow in multiple directions. Some popular multidimensional arrays include 2D arrays which grows in two dimensions, and 3D arrays which grows in three dimension

Initialization of Multidimensional Array in C

In C, multidimensional arrays are the arrays that contain more than one dimensions. These arrays are useful when we need to store data in a table or matrix-like structure. In this article, we will learn the different methods to initialize a multidimensional array in C. The easiest method for initial

Pass Array to Functions in C

Passing an array to a function allows the function to directly access and modify the original array. In this article, we will learn how to pass arrays to functions in C.In C, arrays are always passed to function as pointers. They cannot be passed by value because of the array decay due to which, whe

How to pass a 2D array as a parameter in C?

A 2D array is essentially an array of arrays, where each element of the main array holds another array. In this article, we will see how to pass a 2D array to a function.The simplest and most common method to pass 2D array to a function is by specifying the parameter as 2D array with row size and co

What are the data types for which it is not possible to create an array?

In C, an array is a collection of variables of the same data type, stored in contiguous memory locations. Arrays can store data of primitive types like integers, characters, and floats, as well as user-defined types like structures.However, there are certain data types for which arrays cannot be dir

How to pass an array by value in C ?

In C programming, arrays are always passed as pointers to the function. There are no direct ways to pass the array by value. However, there is trick that allows you to simulate the passing of array by value by enclosing it inside a structure and then passing that structure by value. This will also p

A String in C programming is a sequence of characters terminated with a null character '\0'. The C String is work as an array of characters. The difference between a character array and a C string is that the string in C is terminated with a unique character '\0'.DeclarationDeclaring a string in C i

Array of Strings in C

In C, an array of strings is a 2D array where each row contains a sequence of characters terminated by a '\0' NULL character (strings). It is used to store multiple strings in a single array.Let's take a look at an example:C#include <stdio.h> int main() { // Creating array of strings for 3 str

What is the difference between single quoted and double quoted declaration of char array?

In C programming, the way we declare and initialize a char array can differ based on whether we want to use a sequence of characters and strings. They are basically same with difference only of a '\0' NULL character.Double quotes automatically include the null terminator, making the array a string l

C String Functions

C language provides various built-in functions that can be used for various operations and manipulations on strings. These string functions make it easier to perform tasks such as string copy, concatenation, comparison, length, etc. The <string.h> header file contains these string functions.Th

C Pointers

A pointer is a variable that stores the memory address of another variable. Instead of holding a direct value, it has the address where the value is stored in memory. This allows us to manipulate the data stored at a specific memory location without actually using its variable. It is the backbone of

Pointer Arithmetics in C with Examples

Pointer Arithmetic is the set of valid arithmetic operations that can be performed on pointers. The pointer variables store the memory address of another variable. It doesn't store any value. Hence, there are only a few operations that are allowed to perform on Pointers in C language. The C pointer

C - Pointer to Pointer (Double Pointer)

In C, double pointers are those pointers which stores the address of another pointer. The first pointer is used to store the address of the variable, and the second pointer is used to store the address of the first pointer. That is why they are also known as a pointer to pointer.Let's take a look at

Function Pointer in C

In C, a function pointer is a type of pointer that stores the address of a function, allowing functions to be passed as arguments and invoked dynamically. It is useful in techniques such as callback functions, event-driven programs, and polymorphism (a concept where a function or operator behaves di

How to Declare a Pointer to a Function?

A pointer to a function is similar to a pointer to a variable. However, instead of pointing to a variable, it points to the address of a function. This allows the function to be called indirectly, which is useful in situations like callback functions or event-driven programming.In this article, we w

Pointer to an Array | Array Pointer

A pointer to an array is a pointer that points to the whole array instead of the first element of the array. It considers the whole array as a single unit instead of it being a collection of given elements.Example:C #include<stdio.h> int main() { int arr[5] = { 1, 2, 3, 4, 5 }; int *ptr = arr;

Difference between constant pointer, pointers to constant, and constant pointers to constants

In this article, we will discuss the differences between constant pointer, pointers to constant & constant pointers to constants. Pointers are the variables that hold the address of some other variables, constants, or functions. There are several ways to qualify pointers using const. Pointers to

Pointer vs Array in C

Most of the time, pointer and array accesses can be treated as acting the same, the major exceptions being:Â Â 1. the sizeof operator sizeof(array) returns the amount of memory used by all elements in the arrayÂ sizeof(pointer) only returns the amount of memory used by the pointer variable itselfÂ 2.

Dangling, Void , Null and Wild Pointers in C

In C programming pointers are used to manipulate memory addresses, to store the address of some variable or memory location. But certain situations and characteristics related to pointers become challenging in terms of memory safety and program behavior these include Dangling (when pointing to deall

Near, Far and Huge Pointers in C

In older times, the intel processors had 16-bit registers, but the address bus was 20-bits wide. Due to this, CPU registers were not able to hold the entire address at once. As a solution, the memory was divided into segments of 64 kB size, and the near pointers, far pointers, and huge pointers were

restrict Keyword in C

The restrict keyword is a type qualifier that was introduced in the C99 standard. It is used to tell the compiler that a pointer is the only reference or access point to the memory it points to, allowing the compiler to make optimizations based on that information.Let's take a look at an example:C#i

Corporate & Communications Address:

A-143, 7th Floor, Sovereign Corporate Tower, Sector- 136, Noida, Uttar Pradesh (201305)

Registered Address:

K 061, Tower K, Gulshan Vivante Apartment, Sector 137, Noida, Gautam Buddh Nagar, Uttar Pradesh, 201305

Advertise with us

Company
About Us
Legal
Privacy Policy
In Media
Contact Us
Advertise with us
GFG Corporate Solution
Placement Training Program

Languages
Python
Java
C++
PHP
GoLang
SQL
R Language
Android Tutorial
Tutorials Archive

DSA
Data Structures
Algorithms
DSA for Beginners
Basic DSA Problems
DSA Roadmap
Top 100 DSA Interview Problems
DSA Roadmap by Sandeep Jain
All Cheat Sheets

Data Science & ML
Data Science With Python
Data Science For Beginner
Machine Learning
ML Maths
Data Visualisation
Pandas
NumPy
NLP
Deep Learning

Web Technologies
HTML
CSS
JavaScript
TypeScript
ReactJS
NextJS
Bootstrap
Web Design

Python Tutorial
Python Programming Examples
Python Projects
Python Tkinter
Python Web Scraping
OpenCV Tutorial
Python Interview Question
Django

Computer Science
Operating Systems
Computer Network
Database Management System
Software Engineering
Digital Logic Design
Engineering Maths
Software Development
Software Testing

DevOps
Git
Linux
AWS
Docker
Kubernetes
Azure
GCP
DevOps Roadmap

System Design
High Level Design
Low Level Design
UML Diagrams
Interview Guide
Design Patterns
OOAD
System Design Bootcamp
Interview Questions

Inteview Preparation
Competitive Programming
Top DS or Algo for CP
Company-Wise Recruitment Process
Company-Wise Preparation
Aptitude Preparation
Puzzles

School Subjects
Mathematics
Physics
Chemistry
Biology
Social Science
English Grammar
Commerce
World GK

GeeksforGeeks Videos
DSA
Python
Java
C++
Web Development
Data Science
CS Subjects

@GeeksforGeeks, Sanchhaya Education Private Limited, All rights reserved

We use cookies to ensure you have the best browsing experience on our website. By using our site, you acknowledge that you have read and understood our Cookie Policy & Privacy Policy

Improvement

Suggest Changes

Help us improve. Share your suggestions to enhance the article. Contribute your expertise and make a difference in the GeeksforGeeks portal.

geeksforgeeks-suggest-icon

Create Improvement

Enhance the article with your expertise. Contribute to the GeeksforGeeks community and help create better learning resources for all.

geeksforgeeks-improvement-icon

Suggest Changes

min 4 words, max Words Limit:1000

Thank You!

Your suggestions are valuable to us.

What kind of Experience do you want to share?

Interview Experiences

Admission Experiences

Career Journeys

Work Experiences

Campus Experiences

Competitive Exam Experiences