117. Convert Integer to String

#include <stdio.h>

void print_integer_as_string(int num) {
    if(num == 0) {
        printf("%d", num);
    }
    char str[10];
    int index = 0, flag = 0;;
    if(num < 0) {
        flag = 1;
        num *= -1;
    }

    while(num > 0) {
        str[index++] = (num % 10) + '0';
        num /= 10;
    }
    if(flag) str[index++] = '-';

    for(int i = index-1; i >= 0; i--) {
        printf("%c", str[i]);
        if(i > 0) printf(" ");
    }
}

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