Answer Posted / surya mukherjee

//POINTER TO CONSTANT vs CONSTANT POINTER

#include<iostream.h>
#include<conio.h>

//POINTER TO CONSTANT

void f1()
{
int i=10,j=20;
const int* pi=&i;
cout<<*pi<<endl;
//*pi = 200; ERROR : CANNOT MODIFY A CONST OBJECT IN f1()
pi=&j; // IT CAN POINT ANOTHER CONSTANT
cout<<*pi<<endl;
}

//CONSTANT POINTER

void f2()
{
int i=100,j;
int* const pi=&i;
cout<<*pi<<endl;
*pi = 200; // IT CAN ASSIGN ANOTHER VALUE AT THIS ADDRESS
cout<<*pi<<endl;
//pi=&j; ERROR : CANNOT MODIFY A CONST OBJECT IN f2()
}


void main()
{
clrscr();
f1();
f2();
getch();
}

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