C Program to Find Sum of Natural Numbers Using While Loop

C Program to Find Sum of Natural Numbers Using While Loop. In order to find sum we need to iterate through all natural numbers between 1 to n. Initialize a loop from 1 to N, increment loop counter by 1 for each iteration.

C Program to Find Sum of Natural Numbers Using While Loop

#include <stdio.h>
int main() {
    int n, i, sum = 0;
    printf("Enter a Positive integer: ");
    scanf("%d", &n);
    i = 1;
    while (i <= n) {
        sum += i;
        ++i;
    }
    printf("Sum = %d", sum);
    return 0;
}

Output of Program

Enter a Positive integer: 756
Sum = 286146