So in Objective-C with Cocos2d, I'd use a NSMutableString with format to put a variable (score) into a string. I'd take that string and use a CCLabel to place it on the screen. Using Cocos2D-x, I'...

It cannot compile sources and writes: Undefined symbols for architecture i386: "_CTFontManagerRegisterFontsForURL", referenced from: -[CCLabelTTF getFontName:] in CCLabelTTF.o ld: symbol(s) no...