117. Convert Integer to String

#include <stdio.h>

void print_integer_as_string(int num) {
    char buffer[33];
    int index = 0;
    int neg = 0;

    if (num == 0) {
        printf("0");
        return;
    }

    if (num < 0) {
        neg = 1;
        num = -num;
    }

    while (num > 0) {
        int digit = num % 10;
        buffer[index++] = '0' + digit;
        num /= 10;
    }

    if (neg) {
        buffer[index++] = '-';
    }

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

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