I'm trying to make a class that has a simple integer with in it. Of course, it uses header files and whatnot.
Here's the code:
class.h
class consolBuf
{
private:
int buffersize1 = 10; //Data member initializer is not allowed
int buffersize2 = 10;
static char screenBuffer[10][10]; //screenBuffer
public:
consolBuf(void);
~consolBuf(void);
void draw();
void write(int x, int y);
char get(int x, int y);
};
For some reason some reson Visual Studio keeps complaining that I can't declare a integer in the class.h. I've searched everywhere and I can't find an answer. Is there something I'm missing?
Indeed you can't initialize members like that. If you wanted to initialize those as default values for each instance, you would do that in the constructor:
consolBuf::consolBuf()
: buffersize1(10)
, buffersize2(10)
{
}
In C++03, only static constant values can be defined inside the class. But then, it seems that this is what you need anyway in your case:
class consolBuf
{
private:
static int const buffersize1 = 10; //Data member initializer is now allowed
static int const buffersize2 = 10;
static char screenBuffer[buffersize1][buffersize2]; //screenBuffer
public:
consolBuf(void);
~consolBuf(void);
void draw();
void write(int x, int y);
char get(int x, int y);
};
Note that in C++11, your original code is allowed. So if your original code is really what you wanted, all you might have to do is to enable C++11 features. In C++03, you'll have to use member inizializers in the constructor instead.
If you want to initialize fixed values, declare buffersize1 and buffersize2 as being static const. Otherwise if you want the variables to be local to each instance of a class, initialize them in the constructor.
Apparently C++0x/C++11 allows your above code, however I'd personally still prefer instance variables to be initialized all together in a constructor.
