Adding a sequence of positive integers

/* add.c -- Read a sequence of positive integers and print them 
*          out together with their sum. Use a Sentinel value
*          (say 0) to determine when the sequence has terminated.
*/

#include <stdio.h>
#define SENTINEL 0

int main(void) {
int sum = 0; /* The sum of numbers already read */
int current; /* The number just read */

do {
printf("\nEnter an integer > ");
scanf("%d", &current);
if (current > SENTINEL)
sum = sum + current;
} while (current > SENTINEL);
printf("\nThe sum is %d\n", sum);
}