how do I function?

This is a discussion on how do I function? within the C++ Programming forums, part of the General Programming Boards category; how do I seperate my program into functions to simplify it for other programmers? e.g. is this right? #include.... int.... ...

  1. #1
    mik
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    Question how do I function?

    how do I seperate my program into functions to simplify it for other programmers?

    e.g. is this right?

    #include....

    int....
    float....

    void main()
    {

    printname();

    }//end main

    void printname()
    {
    cout<<"my name is ...";
    }//end



    if so I have a larger program which doesnt work, why, what could I be doing wrong?

  2. #2
    Registered User
    Join Date
    Aug 2001
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    154
    You've got the right idea, but you have to declare a function prototype before you call the function. There are two ways to do this. You can put all your called functions before main (programs always start with main, so it doesn't matter if you put it at the end). The other way is to declare just the prototype first.
    Code:
    #include....
    
    void printname();   // Add this line
     
    int..
    float....
     
    void main()
    {
       printname();
    }                //end main 
    
    void printname() 
    { 
       cout<<"my name is ..."; 
    }                //end
    If you passed any values to printname, include the types in the protoptype:
    void printname(int, int, char);
    Then make sure you pass the appropriate types when you call printname:
    printname(a, b, c); // call printname
    .
    .
    .
    void printname(int x, int y, char z) // printname function
    {
    cout << x << y << z;
    }

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