Find The Tail

/*
6. Find the Tail
Let’s play a game! I’m going to give you a 3-digit number and you’re going to tell me which is its tail. The tail is the last digit of the number. Ready? Go!

Inputs
1. A 3-digit number
*/

#include <stdio.h>

int main(){

    int num,s1;

    printf("Enter the number: ");
    scanf("%d",&num); //decimal so based 10
                        //if binary = base 2
    s1 = num % 10;

    printf("%d",s1);



    return 0;
}