Skip to content

How to Pass or Return a Structure To or From a Function in C?

C Program to Store Information of Students Using Structure

Last Updated : 21 Aug, 2024

Write a C program to store the information of Students using a Structure.

A structure is a user-defined data type in C that is used to create a data type that can be used to group items of possibly different types into a single type.

Example

Input: Name: John Doe, Roll Number: 101, Marks: 85
Name: Jane Smith, Roll Number: 102, Marks: 90

Output: Name: John Doe, Roll Number: 101, Marks: 85
Name: Jane Smith, Roll Number: 102, Marks: 90

Store Information of Students Using Structure in C

The student information generally contains the following data:

Name
Roll Number
Age
Total Marks

Structure to Store the Student Information

The structure should be able to store the above information for each student. So, we will create a data field for each of this information in the structure:

struct Student { 
   int roll_number;
   int age;
   double total_marks;
   char name[100]; 
};

We keep the character array name at the end because in case of buffer overflow, it does not overwrite the other variables’ data in the structure.

Note: We can add more data fields in the structure according to our needs.

Implementation

Below is the C program to implement the structure to store the student information and print it:

C

// C Program to Store Information of Students Using Structure #include <stdio.h> #include <stdlib.h> #include <string.h>  // Create the student structure struct Student {     char* name;     int roll_number;     int age;     double total_marks; };  int main() {      // Create an array of student structure variable with   	// 5 Student's records     struct Student students[5];   	int n = sizeof(students)/sizeof(struct Student);      // Get the students data     students[0].roll_number = 1;     students[0].name = "Geeks1";     students[0].age = 12;     students[0].total_marks = 78.50;      students[1].roll_number = 5;     students[1].name = "Geeks5";     students[1].age = 10;     students[1].total_marks = 56.84;      students[2].roll_number = 2;     students[2].name = "Geeks2";     students[2].age = 11;     students[2].total_marks = 87.94;      students[3].roll_number = 4;     students[3].name = "Geeks4";     students[3].age = 12;     students[3].total_marks = 89.78;      students[4].roll_number = 3;     students[4].name = "Geeks3";     students[4].age = 13;     students[4].total_marks = 78.55;      // Print the Students information     printf("========================================\n");     printf("           Student Records              \n");     printf("========================================\n");          for (int i = 0; i < n; i++) {         printf("\nStudent %d:\n", i + 1);         printf("  Name        : %s\n", students[i].name);         printf("  Roll Number : %d\n", students[i].roll_number);         printf("  Age         : %d\n", students[i].age);         printf("  Total Marks : %.2f\n", students[i].total_marks);     }          printf("========================================\n");      return 0; }

Output

========================================            Student Records               ========================================  Student 1:   Name        : Geeks1   Roll Number : 1   Age         : 12   Total Marks : 78.50  Student 2:   Name        : Geeks5   Roll Number : 5   Age         : 10   Total Marks : 56.84  Student 3:   Name        : Geeks2   Roll Number : 2   Age         : 11   Total Marks : 87.94  Student 4:   Name        : Geeks4   Roll Number : 4   Age         : 12   Total Marks : 89.78  Student 5:   Name        : Geeks3   Roll Number : 3   Age         : 13   Total Marks : 78.55 ========================================

How to Pass or Return a Structure To or From a Function in C?

C

code_r

Improve

Article Tags :

Similar Reads

Structure of the C Program

The basic structure of a C program is divided into 6 parts which makes it easy to read, modify, document, and understand in a particular format. C program must follow the below-mentioned outline in order to successfully compile and execute. Debugging is easier in a well-structured C program. Section

Output of C programs | Set 44 (Structure & Union)

Prerequisite: Structure and UnionQUE.1 What is the output of this program? C/C++ Code #include <stdio.h> struct sample { int a = 0; char b = 'A'; float c = 10.5; }; int main() { struct sample s; printf("%d, %c, %f", s.a, s.b, s.c); return 0; } OPTION a) Error b) 0, A, 10.5 c) 0, A, 1

How to Pass or Return a Structure To or From a Function in C?

A structure is a user-defined data type in C. A structure collects several variables in one place. In a structure, each variable is called a member. The types of data contained in a structure can differ from those in an array (e.g., integer, float, character). Syntax: struct geeksforgeeks { char nam

Read/Write Structure From/to a File in C

For writing in the file, it is easy to write string or int to file using fprintf and putc, but you might have faced difficulty when writing contents of the struct. fwrite and fread make tasks easier when you want to write and read blocks of data. Writing Structure to a File using fwriteWe can use fw

Array of Structures vs Array within a Structure in C

Both Array of Structures and Array within a Structure in C programming is a combination of arrays and structures but both are used to serve different purposes. Array within a StructureA structure is a data type in C that allows a group of related variables to be treated as a single unit instead of s

Learn DSA in C: Master Data Structures and Algorithms Using C

Data Structures and Algorithms (DSA) are one of the most important concepts of programming. They form the foundation of problem solving in computer science providing efficient solutions to the given problem that fits the requirement. Learning DSA in C is beneficial because C provides low-level memor

What are the C programming concepts used as Data Structures

Data Types Data-type in simple terms gives us information about the type of data. Example, integer, character, etc. Data-types in C language are declarations for the variables. Data-types are classified as: Primitive or Built-in data types Some of the examples of primitive data types are as follows

Write a program that produces different results in C and C++

Write a program that compiles and runs both in C and C++, but produces different results when compiled by C and C++ compilers. There can be many such programs, following are some of them. 1) Character literals are treated differently in C and C++. In C character literals like 'a', 'b', ..etc are tre

Test Cases For Signup Page Using C Language

Prerequisite: Structure in C In this article, we are going to check on how to check test cases for the signup page using C language. The signup page is where we enter data to create our account on any of the websites or applications. A test case is a document that contains various sets of data, cond

Structure Pointer in C

A structure pointer is a pointer variable that stores the address of a structure. It allows the programmer to manipulate the structure and its members directly by referencing their memory location rather than passing the structure itself. In this article let's take a look at structure pointer in C.