C++ Pointers

resource: https://www.w3schools.com/cpp/cpp_pointers.asp

C++ Pointers

"&" gets you memory address of variables

 

A pointer is a variable that stores memory address as its value.

 

A pointer is creted by "*" operator.

string food = "Pizza";  // A food variable of type string
string* ptr = &food;    // A pointer variable, with the name ptr, that stores the address of food

 

Operator "*" does two different things.

 

1) It creates a pointer variable

2) It gets also the value of the variable. 

 

string food = "Pizza";  // Variable declaration
string* ptr = &food;    // Pointer declaration

// Reference: Output the memory address of food with the pointer (0x6dfed4)
cout << ptr << "\n";

// Dereference: Output the value of food with the pointer (Pizza)
cout << *ptr << "\n";