Program to find sum of first n natural numbers in C++

In this tutorial, we will be discussing a program to find sum of first n natural numbers.

For this we will be provided with an integer n. Our task is to add up, find the sum of the first n natural numbers and print it out.

Example

 Live Demo

#include<iostream> using namespace std; //returning sum of first n natural numbers int findSum(int n) {    int sum = 0;    for (int x=1; x<=n; x++)     sum = sum + x;    return sum; } int main() {    int n = 5;    cout << findSum(n);    return 0; }

Output

15