The default OS X SDK path is in Application’s Content package;
1- goto Applications Folder -> Xcode
2- Right-click to Xcode, select “Show Package Contents”
3- Navigate to Developer->Platforms-> MacOSX.platform->Developer->SDKs
You get this warning in X-code. X-code 4.6 needs a more readable format as follows
-(void) dateAge: (int) k : (int) i;
you should remove the white spaces between paramter type and variable like this:
-(void) dateAge:(int)k : (int)i;