global parameter, and actual parameter

[Stunning]

how to determine it ?

[o3hC5Di1]

Hi there,

Could you give an example of what you mean please? :)

Do you mean how you can distinguish a global variable from a local variable (eg in a function)?
In that case I don't think that is possible in C++.

All the best,
NwN

[S G H]

Clarify the question?

Let me try to give an answer anyways:

int Variable = 0; // (1) Global Variable

void Function() {
    Variable = 1; // Uses (1)
}

void Function2(int Variable) { // (2) Parameter
    Variable = 1; // Uses (2)
    ::Variable = 1; // Uses (1)
}

void Function3(int Variable) { // (2) Parameter
    Variable = 1; // Uses (2)
    ::Variable = 1; // Uses (1)
    int Variable = 0; // (3) Local Variable
    Variable = 1; // Uses (3)
    ::Variable = 1; // Uses (1)
}

[Stunning]

huhu,

i mean, what is global parameter n actual parameter

[Chervil]

I don't think "global parameter" has any meaning. It's not an expression I would use anyway.

[vlad from moscow]

Any parameter of a function is a local entity inside the function even if it is passed by reference.

EDIT: I'd like to append that according to the C++ standard "actual parameter" is an argument of a function. That is it is not a parameter.

From the C++ standard:

argument
actual argument
actual parameter
<function call expression> expression in the comma-separated list bounded by the parentheses