error C2512: 'Tile' : no appropriate default constructor available

Question

Still have the error even with a default constructor.

class Foo {
    public:
    Foo ( int x, int y, int type );
}

And in the .cpp file

Foo::Foo ( int x = 0, int y = 0, int type = 0 ) {

And yet, when I call it

Foo foo_array[5][5];

I get the error. Any reason why that may be?

see: http://stackoverflow.com/questions/13713916/am-i-using-default-arguments-incorrectly/13713944#13713944 — billz, Feb 20 '13 at 23:31
if you use a `std::vector` instead of raw array, then you can specify a default value so that you don't need to have an otherwise unnecessary (and perhaps not very meaningful) default constructor. — Cheers and hth. - Alf, Feb 20 '13 at 23:33

score 6 · Accepted Answer · answered Feb 20 '13 at 23:31

6

Put the default arguments in the declaration of constructor. As it is, the compiler doesn't know about them when you try to create the array.

answered Feb 20 '13 at 23:31

Pete Becker

How would you do that with arrays? I thought you couldn't. – James Hurley Feb 20 '13 at 23:36
1

@JimHurley You don't need to do anything to the array - change the declaration of the constructor. – Joseph Mansfield Feb 20 '13 at 23:43
I'm sorry, but can you give me an example on how to do this? I thought that the ctor was the where I was doing it. – James Hurley Feb 21 '13 at 00:03
1

Change the declaration in the header from `Foo(int x, int y, int type);` to `Foo(int x = 0, int y = 0, int type = 0);`. You also have to **remove** the default arguments from the .cpp file; the compiler will remind you if you forget. – Pete Becker Feb 21 '13 at 12:11

1 Answers1