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c++cocos2d-x

how to know when to use CCdataType* varName vs. CCdataType *pVarName

my question is how do you know when to use the syntax CCdataType* varName = ..., vs. CCdataType *pVarName = ... I know that the second one is a pointer, but maybe I'm missing something... I don't understand the difference. is the first one a deference statement? do you use the pointer as in CCdataType *pVarName if the value you are referencing is out of the scope of the class that you are writing in?

Solution

  • ... I know that the second one is a pointer ...

    Both are pointers. Just that the "*" is shifted left and right.

    • CCdataType* varName = ... is conventionally considered more C++ style.
    • On the other hand CCdataType *pVarName = ... is more intuitive in the situations where you are declaring several pointer members, such as: T *p1, *p2, *p3;.

    By the way, you can even write:

    CCdataType*pVarName = ...

    Here is the exact information to your question from Bjarne's FAQ page.