C++ Program to print address of a number

Simple C Program to print address of a number: To print address any number, we use & sign. For example if we want to print address number n=9, then we will &n.

/* C++ Program to print address of number */
#include<iostream>
using namespace std;
int main()
{
 int n;
 cout<<"Enter a number: ";
 cin>>n;
 cout<<"Address of number "<<n<<" = "<<&n;
 return 0;
}

Another C++ program to print address using pointer

Pointer is a variable that store address of another variable. For example we want to print address of n then we will declare a pointer to integer *ptr and initialize it as ptr=&n and then pointer ptr will print address of n.

/* C++ Program to print address of number */
#include<iostream>
using namespace std;
int main()
{
 int n,*ptr;
 cout<<"Enter a number: ";
 cin>>n;
 ptr=&n;
 cout<<"Address of number "<<ptr<<endl;
 cout<<"Address of number "<<&n<<endl;
 return 0;
}

If you want to print address of a floating point number or double number then you have to declare a pointer to float or pointer to double.