Convert Integer to String

Code

#include <stdio.h>

void print_integer_as_string(int num) {
    // Your logic here
    char arr[11];
    int i = 10;
    if(num < 0) arr[i--] = '-', num *= -1;
    if(num == 0) {
        printf("0");
        return;
    }
    while (num)
    {
        switch (num%10)
        {
            case 0:
                arr[i--] = '0';
                break;
            case 1:
                arr[i--] = '1';
                break;
            case 2:
                arr[i--] = '2';
                break;
            case 3:
                arr[i--] = '3';
                break;
            case 4:
                arr[i--] = '4';
                break;
            case 5:
                arr[i--] = '5';
                break;
            case 6:
                arr[i--] = '6';
                break;
            case 7:
                arr[i--] = '7';
                break;
            case 8:
                arr[i--] = '8';
                break;
            case 9:
                arr[i--] = '9';
                break;
            default:
                break;
        }
        num /= 10;
    }
    int n = 10;
    i++;
    if(arr[10] == '-') printf("- "), --n;
    for(; i <= n; i++){
        if(i!=n){
            printf("%c", arr[i]);
            printf(" ");
        }
        else printf("%c", arr[i]);

    }
    
}

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

Solving Approach