Please explain me reference counting in easy language

Answer 1

No reference:

void function(bool x)
{
x = true;
}

int main()
{
bool reference = false;
function(reference); //&reference != &x
cout << reference; //false
}

Reference:

void function(bool& x)
{
x = true;
}

int main()
{
bool reference = false;
function(reference); //&reference == &x
cout << reference; //true
}

With a reference, function arguments are not copied.
Do you have questions about this?

Answer 2

nope