Print a long int in C using putchar() only

C program:

#include <stdio.h>

void print(long n)

{

    /* If the number is smaller than 0, put a - sign and change number to positive */

    if (n < 0) {

        putchar('-');

        n = -n;

    }

    if (n/10)

        print(n/10);

    // Print the last digit

    putchar(n%10 + '0');

}

int main()

{

    long int n = 12045;

    print(n);

    return 0;

}

Output:

12045