C program to find the sum of first N natural numbers

Write a C program to find the sum of first N natural numbers.

  #include <stdio.h>
  int main () {
        int n, sum = 0, i = 1;

        /* get the input from user */
        printf("Enter the value for n:");
        scanf("%d", &n);

        /* calculate the sum of first n natural numbers */
        while (i <= n) {
                sum = sum + i;
                i++;
        }

        /* print the output */
        printf("Sum of 1st %d natural numbers is %d\n", n, sum);
        return 0;
  }

  Output:

  jp@jp-VirtualBox:~/$ ./a.out
  Enter the value for n:10
  Sum of 1st 10 natural numbers is 55