The following is a perfectly legal C++ code

void foo (int) {
    cout << "Yo!" << endl;
}

int main (int argc, char const *argv[]) {
    foo(5); 
    return 0;
}

I wonder, if there a value to ever leave unnamed parameters in functions, given the fact that they can't be referenced from within the function.

Why is this legal to begin with?

c++ function parameters
Edit
Report