try yourself |run program

#include <stdio.h>
#include <conio.h>

void main(){
  int *ptr ;
  int v = 100 ;
 clrscr();
 ptr = &v ;
 printf ("\nAddress of v = %p",&v) ;
 printf ("\nAddress of v = %p",ptr) ;
 printf ("\nAddress of ptr = %p",&ptr) ;
 printf ("\nValue of ptr = %p",ptr) ;
 printf ("\nValue of v = %d",v) ;
 printf ("\nValue of v = %d",*(&v)) ;
 printf ("\nValue of v = %d",*ptr) ;
 getch();
}

Program Output

Address of v = 0019FF44
Address of v = 0019FF44
Address of ptr = 0019FF48
Value of ptr = 0019FF44
Value of v = 100
Value of v = 100
Value of v = 100