#include <stdio.h>
struct mys{
    int mynum;
    char myletter;
   };
int main(){
    struct mys s1;
    struct mys s2;

    s1.mynum=13;
    s1.myletter='B';
    s2.mynum=20;
    s2.myletter='C';

    printf("s1 number: %d\n",s1.mynum);
    printf("s1 letter: %c\n",s1.myletter);
    printf("s2 number: %d\n",s2.mynum);
    printf("s2 letter: %c\n",s2.myletter);
}