I have the following class structure but when I build, I keep getting the error:
error: no viable overloaded '='
p1 = new HumanPlayer();
~~ ^ ~~~~~~~~~~~~~~~~~
../Test.cpp:14:7: note: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'HumanPlayer *' to 'const Player' for 1st argument; dereference the argument with *
class Player {
^
1 error generated.
class Player {
public:
void getMove(int player) {
cout << "Get move" << endl;
}
};
class HumanPlayer: public Player {
public:
void getMove(int player) {
cout << "Get Human move \n";
}
};
class MyClass {
public:
int mode;
Player p1;
MyClass() {
mode = 0;
cout << "Choose a mode: \n";
cin >> mode;
switch (mode) {
case 1:
p1 = new HumanPlayer();
break;
default:
break;
}
p1.getMove(0);
}
};
int main() {
MyClass c;
return 0;
}
I tried to change the Player p1;
to Player* p1;
and changed p1.getMove
to p1->getMove
but then it did not work correctly. It printed Get move
instead of Get Human move
.
CodePudding user response:
as commented above
p1 = new HumanPlayer();
is valid if p1 is declared as pointer, unlike java you can in c assign with and without the new keyword...
in your case declaring p1 as pointer will be ok
Player* p1{nullptr};
and later
p1 = new HumanPlayer();