C program to find the sum of n natural numbers

Program Description:

In this following program we will use the the concept of loop to find the sum of numbers from 1 to n, where n will be entered by the user.]

Source code:

#include<stdio.h>

int main()

{

int sum=0,i,n;

printf("Enter a number:");

scanf("%d",&n);

for(i=1;i<=n;i++)

sum=sum+i;

printf("The sum numbers from 1 to %d is %d",n,sum);

}

Output: