help me

Question

can anyone explain what is &obj in funtion??

class MyClass {
public:
MyClass() {
regVar = 0;
}
private:
int regVar;

friend void someFunc(MyClass &obj);
};

Answer 1

&obj is a pointer to the obj object. If you want to know more, you need to show us the code.

Answer 2

Ok, someFunc takes MyClass object by reference. As it is friend function, it can access obj's private variables and functions. It takes a pointer to an object because we want to modify the original object but not its copy, as it happens if we're passing the object itself.