Question

I am new in c++ i have a question on default argument.
If there a function with a following prototype

void f(int=10,int=20,int=30,int=40)

If this funcion is called by passing 2 arguments to it,how can we make sure that these argumnts are treated as first and third whereas, the second and forth are taken as defaults.

Answer 1

You can’t. Arguments to functions match the parameters in order. You can use overloading instead of default arguments like this:

void myFunc(int a,int b,int c,int d);
void myFunc(int a,int c) {
    myFunc(a,20,c,40);
}