pointers as default arguments

This is a discussion on pointers as default arguments within the C++ Programming forums, part of the General Programming Boards category; can anyone telll me how to assign a pointer as a default argument for a c++ function. I tried but ...

  1. #1
    ajm
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    Question pointers as default arguments

    can anyone telll me how to assign a pointer as a default argument for a c++ function. I tried but clouldn't do anything much useful.Please help.

  2. #2
    geek SilentStrike's Avatar
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    It's just like any other function defaulting. Here is some code illustrating it.

    Code:
    #include <iostream>
    
    using namespace std;
    
    void f(int* g = 0) {
    	if (g != 0) std::cout << *g << std::endl;
    }
    
    int main() {
    	int a=5;
    	int* pA=&a;
    
    	f();
    	f(pA);
    	f(&a);
    
    	return 0;
    }
    Perhaps you should post code that isn't working for you?
    Prove you can code in C++ or C# at TopCoder, referrer rrenaud
    Read my livejournal

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    You don't need the std:: if you #include namespace std;
    Truth is a malleable commodity - Dick Cheney

  4. #4
    geek SilentStrike's Avatar
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    Yeah, I know.. I just usually don't do the using namespace std thing .
    Prove you can code in C++ or C# at TopCoder, referrer rrenaud
    Read my livejournal

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