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What is pointer operator & in C++?
C++ provides two pointer operators, which are Address of Operator (&) and Indirection Operator (*). A pointer is a variable that contains the address of another variable or you can say that a variable that contains the address of another variable is said to "point to" the other variable. A variable can be any data type including an object, structure or again pointer itself.
The address of Operator (&), and it is the complement of *. It is a unary operator that returns the address of the variable(r-value) specified by its operand. For example,
Example
#include <iostream>
using namespace std;
int main () {
int var;
int *ptr;
int val;
var = 3000;
ptr = &var; // take the address of var
val = *ptr; // take the value available at ptr
cout << "Value of var :" << var << endl;
cout << "Value of ptr :" << ptr << endl;
cout << "Value of val :" << val << endl;
return 0;
}Output
When the above code is compiled and executed, it produces the following result −
Value of var : 3000 Value of ptr : 0xbff64494 Value of val : 3000
Updated on: 10-Feb-2020
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