structures using pointers(->)

 #include<stdio.h>

#include<string.h>

typedef struct student{

int rollno;

char  name[50];

int marks;

}std;

int main()

{

std s1;

std *ptr;

ptr=&s1;

ptr->rollno=71;

strcpy(ptr->name,"abhi");

ptr->marks=99;

std s2;

std *p;

p=&s2;

p->rollno=5468;

strcpy(p->name,"kaala");

p->marks=00;

show(s1);

display(s2);

}

void show(std s1)

{

printf("rollno:%d\n",s1.rollno);

printf("name:%s\n",s1.name);

printf("marks:%d\n",s1.marks);

}

void display ( std s2)

{

  printf("rollno:%d\n",s2.rollno);

printf("name:%s\n",s2.name);

printf("marks:%d\n",s2.marks);

}