// print digits from an integer one per line, reverse order

#include <stdio.h>

// 9781/10 = 978 R 1
//  978/10 =  97 R 8
//   97/10 =   9 R 7
//    9/10 =   0 R 9

int main(int argc, char *argv[]) {
    int num;

    while (1) {  
        printf("Integer? ");
        if (scanf("%d", &num) != 1) break;

        // extract the digits
        do {
            printf("%d\n", num % 2);
            num = num / 2;
        } while (num != 0);
    }
    return 0;
}