/*
 * Program to compute sum of integers from stdin (as a simple example of
 * using a while loop).
 */
#include <stdio.h>

int main(void) {
	printf("enter integer, anything else to end\n");
	int n;
	int sum = 0;
	while (scanf("%d", &n) == 1) {
		sum += n;
	}

	printf("sum is %d\n", sum);
	return 0;
}