117. Convert Integer to String

#include <stdio.h>

void print_integer_as_string(int num) {
    int sign = (num < 0)? 1: 0;
    if (sign) {
        putchar('-');
        putchar(' ');
        num *= -1;
    }

    char digits[5];
    int index = 0;

    while (num >= 0) {
        digits[index++] = (num % 10) + '0';
        num /= 10;
        if (num == 0)
            break;
    }

    for (int i = index - 1; i >= 0; i--) {
        putchar(digits[i]);
        putchar(' ');
    }

}

int main() {
    int num;
    scanf("%d", &num);
    print_integer_as_string(num);
    return 0;
}