Program to use realloc() and free() functions

#include<stdio.h>

#include<conio.h>

main()

{

char buf[80], *message;

printf("\nWhen create pointer it has no address and data also.");

printf("\nIn this program please enter at-least one line of text.");

printf(" Pfoof given below :\n");

message='\0';

printf("\nMessage is :%s",message);

printf("\nAddress is :%p",message);

printf("\n\nUsing reallocation function to update message pointer.");

printf("\nEnter line of texts :");

gets(buf);

message = realloc('\0', strlen(buf)+1);  //here 0 is previous data (NULL)

strcpy(message, buf);

printf("\nYou message is :%s",message);

printf("\nAddress is :%p",message);

char *x,*p;

x=&message;

p=free(x);

printf("\nMemory address is :%p",p);

getch();

}