// Andrew Taylor - andrewt@unsw.edu.au
//
// Read numbers printing whether they are even or odd
// illustrate suse of a sentinal variable (stop_loop)
//
// Note for simplicity we are assuming scanf succeeds in reading an integer.
// A robust program would check that scanf returns 1 to indicate an integer read.
//
// 7/3/2017

#include <stdio.h>

int main(void) {
    int stop_loop, number;

    printf("Enter numbers, 0 to stop\n");

    stop_loop = 0;
    while (stop_loop != 1) {
        scanf("%d", &number);
        if (number == 0) {
            stop_loop = 1;
        } else if (number % 2 == 1) {
            printf("%d is odd.\n", number);
        } else {
            printf("%d is even.\n", number);
        }
    }

    return 0;
}