62. PROGRAM TO SHOW THE FUNCTIONING OF POINTER TO A POINTER

//WAP TO SHOW THE FUNCTIONING OF POINTER TO A POINTER
#include<conio.h>
#include<stdio.h>
void main()
{
 int a=10;
 int *ptr;
 int **ptr2;
 ptr=&a;
 ptr2=&ptr;
 clrscr();
 printf("\n\nVALUE STORED AT A=%d",a);
 printf("\n\nADDRESS OF A=%u",&a);
 printf("\n\nVALUE STORED AT PTR(ADDRESS OF A)=%u",ptr);
 printf("\n\nVALUE POINTED BY PTR(VALUE OF A)=%d",*ptr);
 printf("\n\nADDRESS OF PTR=%u",&ptr);
 printf("\n\nVALUE STORED AT PTR2(ADDRESS OF PTR)=%u",ptr2);
 printf("\n\nVALUE POINTED BY PTR2(THE VALUE WHICH IS POINTED BY PTR I.E, VALUE OF A)=%d",**ptr2);
 printf("\n\nADDRESS OF PTR2=%u",&ptr2);
 printf("\n\nTHE VALUE GIVES BY PTR2 WHEN THERE IS A SINGLE ASTRIX=%u=VALUE OF A",*ptr2);
 getch();
}
/***********************************************************************************************
OUTPUT
 ***********************************************************************************************


VALUE STORED AT A=10

ADDRESS OF A=65524

VALUE STORED AT PTR(ADDRESS OF A)=65524

VALUE POINTED BY PTR(VALUE OF A)=10

ADDRESS OF PTR=65522

VALUE STORED AT PTR2(ADDRESS OF PTR)=65522

VALUE POINTED BY PTR2(THE VALUE WHICH IS POINTED BY PTR I.E, VALUE OF A)=10

ADDRESS OF PTR2=65520

THE VALUE GIVES BY PTR2 WHEN THERE IS A SINGLE ASTRIX=65524=VALUE OF A

*/