Question

I’m trying to make a function that takes in either 1 or 3 parameters, and returns either 1 or 3 values (based on parameters passed).

If 1 parameter is passed then the function uses default values for the other 2 arguments.
If 3 parameters are passed then it uses those values.

bool foo( bool x, int &y = 0, int &z = 0) {

x = true; y = y + 1; z = z + 2;

return x;

}

Is this possible in C++ or am I confused with Java functions.

Answer 1

You can do it with two functions:

bool foo( bool x, int &y, int &z) {
    x = true; // this isn't really what it does, is it?
    y = y + 1; z = z + 2;
    return x;
}

bool foo(bool x)
{
    int a = 0, b = 0;
    return foo(x,a,b);
}