#include <stdio.h>

struct student{
    int rollno;
    char name[20];
    float mark;
};

int main() {
    struct student s1={10,"Karthi",50.5};
    struct student s2={11,"Muthu",100};
    printf("Roll no: %d\n",s1.rollno);
    printf("Name: %s\n",s1.name);
    printf("Mark: %.2f\n",s1.mark,s2.mark);
    printf("Roll no: %d\n",s2.rollno);
    printf("Name: %s\n",s2.name);
    printf("Mark: %.2f\n",s2.mark);
return 0;
}