Convert Integer to String

Code

#include <stdio.h>

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

    char res[20];
    int i = 0;
    bool negative = false;

    if (num < 0) {
        negative = true;
        num = -num;
    }

    while (num > 0) {
        res[i++] = (num % 10) + '0';
        num /= 10;
    }

    if (negative) {
        res[i++] = '-';
    }

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

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

Solving Approach