malloc swap function program

/*swapping two values through malloc function C program*/

#include<stdio.h>

#include<conio.h>

struct stud

{

 char nam[30];

 struct stud *next;

};

struct stud *p,*q;

int main()

{

 p=(struct stud *)malloc(sizeof(struct stud));

 q=(struct stud *)malloc(sizeof(struct stud));

 printf("Enter name p : ");

 gets(p->nam);

 //fflush(stdin);

 printf("Enter name q : ");

 gets(q->nam);

 p->next=q;

 q->next=p;

 printf("\nName of p : %s",p->next->nam);

 printf("\nName of q : %s",q->next->nam);
 getch();
 return 0;

}

       Output of above program : 

Enter name p : Peter

Enter name q : Jhon

Name of p : Jhon

Name of q : Peter