Muhib_Codes
Pointers
basic code of a pointers
#include<iostream>
using namespace std;
int main()
{
int a=5;
int *p;
p=&a;
//& is a refernce operator
//* is a derefernce operator
cout<<a<<endl;//Original value of a
cout<<p<<endl;//reference (address) of a
cout << &a << endl; // reference (address) of a
cout << *p << endl; // Original value of a
return 0;
}
Double Pointers
#include <iostream>
using namespace std;
int main()
{
int a = 5;
int *p;
p = &a;
int **ptr;
ptr=&p;
cout << p << endl; // Original value of p as a address stored in p
cout << ptr << endl; // reference (address) of p as a address of a pointer varibel p
cout << &p << endl; // reference (address) of p as a address of a pointer varibel p
cout << **ptr << endl; // Original value of p as a address stored in p
return 0;
}
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