Program to find the sum of the first N natural numbers using FOR loop

#include<stdio.h>

void main()

{

int i, n, sum=0;

clrscr();

printf("Enter the value of n:");

scanf("%d", &n);

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

sum=sum+i;

printf("Sum of first %d natural numbers = %d", n, sum);

getch();

}