C++ : Pointer Program

#include<iostream>

using namespace std;

int main()

{

    int a=4;

    int* b=&a;

    // & is address of operator

    cout<<"Thr address of a is "<<&a<<endl;

    cout<<"Thr address of a is "<<b<<endl;

    // * is value at dereference operator

    cout<<"Thr value of a is "<<*b<<endl;

    

    // Pointer to pointer

    int** c=&b;

cout<<"The adress of b is"<<&b<<endl;

    cout<<"The adress of b is"<<c<<endl;

    cout<<"The value at address c is "<<*c<<endl ;

    cout<<"The value at address value_at (value_at( c )) is "<<**c<<endl;

   

}

OUTPUT =>

    

    
Thr address of a is 0x28ff28

Thr address of a is 0x28ff28 Thr value of a is 4 The adress of b is0x28ff24 The adress of b is0x28ff24 The value at address c is 0x28ff28 The value at address value_at (value_at( c )) is 4

int array[]={20,25,30,40,45,50};

    int* p=array;

    while(*p<=array[5])

    {

        cout<<"Value when p is "<<p<<"is "<<*p<<endl;

        p=p+1;

   

    }

OUTPUT =>

Value when p is 0x28ff08is 20 Value when p is 0x28ff0cis 25 Value when p is 0x28ff10is 30 Value when p is 0x28ff14is 40 Value when p is 0x28ff18is 45 Value when p is 0x28ff1cis 50