C++ Programs Archives - GeeksforGeeks

Program to Implement Singly Linked List in C++ Using Class

Last Updated: 11 January 2025

A singly linked list is a linear data structure where each element (node) points to the next element in the sequence. It consists of nodes, ...read more

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cin in C++

Last Updated: 12 December 2024

In C++, cin is an object of istream class that is used to accept the input from the standard input stream i.e. stdin which is by default ass ...read more

Shallow Copy and Deep Copy in C++

Last Updated: 11 October 2024

In general, creating a copy of an object means to create an exact replica of the object having the same literal value, data type, and resour...read more

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How to Find Index of a Given Element in a Vector in C++?

Last Updated: 26 November 2024

Vectors stores elements in contiguous memory and these elements can be accessed by their indexes. In this article, we will learn the reverse ...read more

Sorting a Map by value in C++ STL

Last Updated: 29 December 2022

Maps are associative containers that store elements in a mapped fashion. Each element has a key value and a mapped value. No two mapped valu ...read more

Enum Classes in C++ and Their Advantage over Enum DataType

Last Updated: 11 January 2025

Enums, or enumerated types, are user-defined data types in C++ that allow the programmer to define a set of named values. These values are f ...read more

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C++ Programs

Convert character array to string in C++

Last Updated: 11 January 2025

This article shows how to convert a character array to a string in C++.The std::string in c++ has a lot of inbuilt functions which makes imp ...read more

How to Reverse a Vector using STL in C++?

Last Updated: 19 November 2024

Reversing the vector means the swapping last element and first element, second last element and second element, and so on.In this article, w ...read more

How to Find the Maximum Element of a Vector using STL in C++?

Last Updated: 02 November 2024

Given a vector, find the maximum element of the vector using STL in C++. ExampleInput: v = {2, 4, 1, 5, 3}Output: 5Explanation: 5 is the lar ...read more

Sorting a Vector in C++

Last Updated: 13 December 2024

Sorting a vector means arranging the elements of vector in ascending order or in descending order or in desired defined order. In this artic ...read more

Convert String to Char Array in C++

Last Updated: 11 January 2025

In C++, we usually represent text data using the std::string object. But in some cases, we may need to convert a std::string to a character ...read more

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Different Ways to Copy a Vector in C++

Last Updated: 20 November 2024

Copying a vector is the process of creating a new vector that contains same elements as original vector. In this article, we will learn diff ...read more

Sort Vector of Pairs in Ascending Order in C++

Last Updated: 17 December 2024

Sorting a vector of pairs in ascending order means arranging the elements in such a way that first pair is lesser than second pair, second p ...read more

C++ Program to Check Prime Number

Last Updated: 05 May 2025

A Prime Number is a natural number greater than 1 that has no positive divisors other than 1 and itself.Examples:Input: n = 29Output: 29 is ...read more

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C++ Program for Quick Sort

Last Updated: 18 October 2024

Quick Sort is one of the most efficient sorting algorithms available to sort the given dataset. It is known for its efficiency in handling l ...read more