What if we want h=45 and l or w by default.??(see code below)

Question

int volume(int l=1, int w=1, int h=1) {
return l*w*h;
}

int main() {
cout << volume() << endl;
cout << volume(5) << endl;//l=5 & w/h by default
cout << volume(2, 3) << endl;
cout << volume(3, 7, 6) << endl;
}

/* Output
1
5
6
126
*/

Answer 1

You can set default values for arguments only from right so if you want to set L and W by default you must set H also as default or you can change the order of the arguments.

Answer 2

int volume (int h=1, int l=1, int w=1){
return l*w*h;
}

put the argument for which you don't want a default value first and the arguments which you by default to the end.