Objects

This is a discussion on Objects within the C++ Programming forums, part of the General Programming Boards category; im stuck with objects Code: class solar { int satellites; }earth, venus; int main() { string planet; cout << "enter ...

  1. #1
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    Objects

    im stuck with objects
    Code:
    class solar
    
    { 
       int satellites;
    }earth, venus;
    
    int main()
    {
        string planet;
        cout << "enter a planet name";
        getline(cin, planet);
       cout << planet << " has " << earth.satellites << " satellites"; /*i would like to reference the object name using the string variable, i.e planet.satellites*/
    }
    thanks!

  2. #2
    Kernel hacker
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    That isn't possible in C. You could make a table of objets, and store the name of a planet in each class object, and then search for the matching name in a table.

    --
    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  3. #3
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    ahh ok, i was just hoping to reduce the size of my code! Thanks!

  4. #4
    and the hat of sweating
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    What about using a map?
    Code:
    std::map<std::string, solar> planets;
    planets.insert( std::make_pair( "Earth", earth ) );
    planets.insert( std::make_pair( "Venus", venus ) );
    "I am probably the laziest programmer on the planet, a fact with which anyone who has ever seen my code will agree." - esbo, 11/15/2008

    "the internet is a scary place to be thats why i dont use it much." - billet, 03/17/2010

  5. #5
    Kernel hacker
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    That is indeed a form of table.

    --
    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  6. #6
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    Hi, i forgot about this problem, and now ive run into it again someone else pointed me in this direction too, but im having problems with maps. is there anyway you could show me how to implement them in this scenario? im getting compiler errors with this

    Code:
    std::map<std::string, solar> planets;
    planets.insert( std::make_pair( "Earth", earth ) );
    planets.insert( std::make_pair( "Venus", venus ) );
    ('map' is not a member of 'std')

    p.s bump

  7. #7
    and the Hat of Guessing tabstop's Avatar
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    Sounds like you forgot to #include <map>.

  8. #8
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    oho! so i did!

    how could i use this to help me?

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