Operator overloading question

This is a discussion on Operator overloading question within the C++ Programming forums, part of the General Programming Boards category; I have a class written, and i need to overload the operator + for it, so it just sums everything ...

  1. #1
    Registered User
    Join Date
    Sep 2004
    Posts
    3

    Operator overloading question

    I have a class written, and i need to overload the operator + for it, so it just sums everything up really.

    Code:
    Folder f1;
    f1.add_entry("name","post");
    // f1.name[0] = "name"
    // f1.post[0] = "post"
    //both arrays have more space
    
    
    Folder f2;
    f2.add_entry("name2","post2");
    // f2.name[0] = "name2"
    // f2.post[0] = "post2"
    //both arrays have more space.
    
    Folder f3;
    So i need:

    Code:
    f3 = f1 + f2;
    So f3 then contains all the info from f1 and f2.


    How do i write that function, i'm lost with unary operator overloading...

    BTW, the variables in the classes are mostly strings with a bool and a double in there.

  2. #2
    Carnivore ('-'v) Hunter2's Avatar
    Join Date
    May 2002
    Posts
    2,879
    Create a member function called "operator +" which returns an object of the same type as the class, and which receives as a parameter any type that you want.

    Code:
    class MyClass;
    {
    public:
       MyClass operator+(int rValue);
       MyClass operator+(double rValue);
       MyClass operator+(const MyClass& rValue);
    };
    Just Google It. √

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