C++ References

Think about a reference as aliase for a variable. To have a reference, first variable must be created, for example:

int var = 5555;

Now pointer to a variable:

int *ptrVar = &var;

And now reference to variable using ampersand symbol between data type and reference name:

int & varRef = var;

Knowing pointers and references, we can get value in a variable:

cout << "Value in var: " << var << endl;
cout << "Value using pointer: " << *ptrVar << endl;

cout << "Value using Reference: " << varRef << endl;

Full script: 

#include <iostream>

using namespace std;

int main() {

    int var = 5555;
    int *ptrVar = &var;

    int & varRef = var;

    cout << "Value in var: " << var << endl;
    cout << "Value using pointer: " << *ptrVar << endl;

    cout << "Value using Reference: " << varRef << endl;

    return 0;

}

Result:

Value in var: 5555
Value using pointer: 5555
Value using Reference: 5555

Process returned 0 (0x0)   execution time : 0.215 s
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