Constructor trap. 2007-12-16(Sun)

• Sometimes you have many constructors. Once we had a color class. The following construction of a color object,

       Color col(0);
       

  seems possible. (maybe all rgb color value will be 0). But it makes segmentation fault. Even all the constructors are explicit. Because there is a constructor,

       Color(int rgba[4]);
       

  exists and 0 is a null pointer.