/**
 * Program to sum integers (example of while loop).
 */
#include <stdio.h>

int main(void) {
    int input;
    int sum = 0;

    printf("enter some integers, anything else to stop\n");

    while (scanf("%d", &input) == 1) {
        sum += input;
    }
    printf("sum is %d\n", sum);
    return 0;
}