Whats wrong with my find Circle Area program?[compiles fine]

This is a discussion on Whats wrong with my find Circle Area program?[compiles fine] within the C++ Programming forums, part of the General Programming Boards category; I know there are some easier ways to perform this but I'm trying to get used to pointers and arrays[samething]. ...

  1. #1
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    Whats wrong with my find Circle Area program?[compiles fine]

    I know there are some easier ways to perform this but I'm trying to get used to pointers and arrays[samething]. When the user types in the radius it doesn't return the current area.(pie * r2)

    Code:
    #include <iostream>
    
    inline float GetArea(float *buffer, float radius)
    {
     buffer= new float[5];
     buffer[2]= radius * radius;
     buffer[1]= 3.14;
     buffer[0]= buffer[2]*buffer[1];
     return buffer[0];
    }
    
    int main(int argc, char **argv)
    {
     float mybuffer, radius;
     cout << "Input the radius: ";
      cin >> radius;
     GetArea(&mybuffer, radius);
     cout << "The Area is: " << &mybuffer;
    
     cin.get();
     return 0;
    }
    Compiler: MingW(IDE: Bloodshed Dev-C++ 4.01)
    Web Site: Zoo Crew
    Forums: Zoo Boards
    E-mail: goldenbunny84@hotmail.com

    "Do you wanna go to jail or do you wanna go home?!?!" - Alonzo(Training Day)

  2. #2
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    what do you want the program to do becuz if u just want it to find the area than i think it can be done much more easily

  3. #3
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    GB knows this but GB is tryin to use pointers...

    and arrays..
    What is C++?

  4. #4
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    Looks like someone didn't really read my post
    Compiler: MingW(IDE: Bloodshed Dev-C++ 4.01)
    Web Site: Zoo Crew
    Forums: Zoo Boards
    E-mail: goldenbunny84@hotmail.com

    "Do you wanna go to jail or do you wanna go home?!?!" - Alonzo(Training Day)

  5. #5
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    ok. then i dont see the problem with his code maybe you can help.

    ( i was the unregistered person)

  6. #6
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    ok
    Compiler: MingW(IDE: Bloodshed Dev-C++ 4.01)
    Web Site: Zoo Crew
    Forums: Zoo Boards
    E-mail: goldenbunny84@hotmail.com

    "Do you wanna go to jail or do you wanna go home?!?!" - Alonzo(Training Day)

  7. #7
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    if you can get the code post it i want to know whats wrong with it
    let me know it that help plz



    #include <iostream.h>
    #include <conio.h>
    double mult(double x, double y);

    int main()
    {
    double x, y = 3.14;
    cout<<"Please input your radius: ";
    cin>>x;
    cout<<"The area is "<<mult(x, y);
    getch();
    return 0;
    }
    double mult(double x, double y)
    {
    return x*y*x;
    }


    this is a way of doing it w/ a function it works. i used getch() for my stupid compiler closing when i launch the program
    Last edited by gamer4life687; 06-15-2002 at 09:09 PM.

  8. #8
    i dont know Vicious's Avatar
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    uh dude... use code tags... or youll be hated here....

    put [ code ] and [ / code ] around your code.

    without spaces of course..
    What is C++?

  9. #9
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    i dont quite catch what your saying im kind of new here hehehe do you mean


    code:


    #include <iostream.h>
    #include <conio.h>
    double mult(double x, double y);

    int main()
    {
    double x, y = 3.14;
    cout<<"Please input your radius: ";
    cin>>x;
    cout<<"The area is "<<mult(x, y);
    getch();
    return 0;
    }
    double mult(double x, double y)
    {
    return x*y*x;
    }





    like that
    Last edited by gamer4life687; 06-15-2002 at 09:29 PM.

  10. #10
    i dont know Vicious's Avatar
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    no like
    this

    Code:
    Code:
     < put that above your code
    <<that below your code...
    What is C++?

  11. #11
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    Ok, over here we use a web development language known as PHP. Very similiar to HTML. If you want your source code to be readible you must go like this [ code ] before your code, and to end it you go like this [ /code ]. I know how to do this the simple way.

    Code:
    #include <iostream>
    #define done 0
    
    inline float Area(float pie, float radius)
    {
     return pie*(radius*radius);
    }  
    
    int main()
    {
     float x;
     cout << "Input the radius: ";
     cin >> x;
     cout << "The Area is: " << Area(3.14, x);
    
     cin.get();
     return done;
    }
    But I won't to do it the pointer/array way.
    Compiler: MingW(IDE: Bloodshed Dev-C++ 4.01)
    Web Site: Zoo Crew
    Forums: Zoo Boards
    E-mail: goldenbunny84@hotmail.com

    "Do you wanna go to jail or do you wanna go home?!?!" - Alonzo(Training Day)

  12. #12
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    thanks and did you figure out you code problems yet i really want to know whats wrong cuz i cant figure it out

  13. #13
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    that code does work so i guess its figured out the easy way then

  14. #14
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    After the user types in the radius, it doesn't return the proper area.
    Compiler: MingW(IDE: Bloodshed Dev-C++ 4.01)
    Web Site: Zoo Crew
    Forums: Zoo Boards
    E-mail: goldenbunny84@hotmail.com

    "Do you wanna go to jail or do you wanna go home?!?!" - Alonzo(Training Day)

  15. #15
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    maybe you have the wrong formula or maybe you checkec it wrong cuz it workes for me, both of the codes mine and the other one. area = pie * radius^2

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