overloading for newbies

This is a discussion on overloading for newbies within the C++ Programming forums, part of the General Programming Boards category; Hello. I'm new to C++ but I have some knowledge of C. You may laugh because I don't know what ...

  1. #1
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    overloading for newbies

    Hello. I'm new to C++ but I have some knowledge of C. You may laugh because I don't know what overloading means. I've been doing some reading and I have the vauge idea that overloading means you have two different functions say, but with the same name. Am I in the right direction? Anyway, I need to know how to overload | and & to compute a union of sets and an intersection of sets. Please help.

  2. #2
    Registered User jlou's Avatar
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    There is overloading functions and overloading operators. Overloading functions is giving two functions the same name, but having the input parameters be different. For example:
    Code:
    void DisplayData(int integerData)
    {
        cout << integerData << endl;
    }
    
    void DisplayData(float floatData)
    {
        cout << floatData << endl;
    }
    I think what you want is operator overloading. This allows you to give a new definition to an operator (like | or & or * or + or =, etc.) based on what types are used with the operator. Usually, this is used for a specific class. So if you have a class that represents a set, you could overload the operator | to combine two instances of the set. Do you already have a class that represents a set? That would be a good start.

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    Ok I understand now. Thanks. But how would you go about overloading an operator? Would it be possible for you to give me a short example? Or a link to a good explanation/example?

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