117. Convert Integer to String

#include <stdio.h>

void print_integer_as_string(int num) {
    // Your logic here
    if(0 == num){
        putchar('0');
        return;
    }
    if(num < 0){
       putchar('-');
       putchar(' ');
       num = -num;
    }
    char digits[10];
    int digit_idx = 0;
    while(num)
    {
        digits[digit_idx++] = '0'+(num%10);
        num = num/10;
    }
    while(digit_idx)
    {
       putchar(digits[--digit_idx]);
       if(0!=digit_idx) putchar(' ');
    }
}

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