#include<stdio.h>
struct student
{
    char name[30];
    int rollno;
    float marks;
};
void display(struct student *);
void main()
{
    struct student s1 = {"Raja", 538, 92};
    display(&s1);
    getch();
}
void display(struct student *ptr)
{
    printf("Student name\tRollno\tMarks\n");
    printf("%s\t\t%i\t%f",ptr->name,ptr->rollno,ptr->marks);
}

 OUTPUT:

Student name    Rollno  Marks
Raja            538     92.000000