// struct data types
#include <stdio.h>
struct student{
    char name[20];
    int rollno;
    float marks;
} s1={"ABC",1,78.77};

int main() {
    printf("Name = %s\nRollNo = %d\nMarks = %f",s1.name,s1.rollno,s1.marks);
    return 0;
}