Can I set a default argument from a previous argument?

Question

Is it possible to use previous arguments in a functions parameter list as the default value for later arguments in the parameter list? For instance,

void f(         


        

Answer 1

As a potential workaround, you could do:

const int defaultValue = -999; // or something similar

void f( int a, int b = defaultValue, int c = defaultValue )
{
    if (b == defaultValue) { b = a; }
    if (c == defaultValue) { c = b; }

    //...
}