#include <stdio.h>
 
// Define a structure
struct Student {
    int roll;
    char name[50];
    float marks;
};
 
int main() {
    struct Student s1 = {101, "Ravi Kumar", 89.5};
    struct Student *ptr;  // Pointer to structure
 
    // Assign address of structure to pointer
    ptr = &s1;
 
    // Access structure members using pointer and arrow operator
    printf("Student Details:\n");
    printf("Roll Number: %d\n", ptr->roll);
    printf("Name: %s\n", ptr->name);
    printf("Marks: %.2f\n", ptr->marks);
 
    return 0;
}