Heeeelp!

This is a discussion on Heeeelp! within the C++ Programming forums, part of the General Programming Boards category; I'm writing a program for my C++ class that receives input and displays the fraction input. I can't figure out ...

  1. #1
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    Heeeelp!

    I'm writing a program for my C++ class that receives input and displays the fraction input. I can't figure out for the life of me why it is not working. I've got a syntax error somewhere. Please help a brotha out.

    Code:
    #include <iosotream>
    using namespace std
    
    void getFrac(int& , int&);
    
    int main()
    {
        int num,        // input - fraction numerator
            denom;      // input - fraction denominator
            
        cout <<  "Enter a common fraction "
             <<  "as 2 integers seperated by a slash: ";
             
             getFrac(num, denom);
             
             cout << "Fraction is " << numerator
                  << " / " << denomerator << endl;
                  
                  system("pause");
                  
             return 0;
    
    }
    // Reads a fraction.
    // Pre: none
    // Post: Returns fraction numerator through numerator
    //         Returns fraction denominator through denominator 
    void getFrac(int& numerator,     // OUT
                 int& denominator)   // OUT
    {
      char slash;   // temporary storage for slash
      cin >> numerator >> slash >> denominator;
    }
    Last edited by Dave_Sinkula; 07-21-2006 at 09:59 PM. Reason: Added [code][/code] tags -- learn to use them yourself.

  2. #2
    Just Lurking Dave_Sinkula's Avatar
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    5,006
    Typos?
    Code:
    #include <iostream>
    using namespace std;
    //...
             cout << "Fraction is " << num
                  << " / " << denom << endl;
    7. It is easier to write an incorrect program than understand a correct one.
    40. There are two ways to write error-free programs; only the third one works.*

  3. #3
    The superhaterodyne twomers's Avatar
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    Also, why do you need a function to get the num and denom? Requirement? the:

    Code:
    cin >> numerator >> slash >> denominator;
    will require a key press of return after each variable, but what I would do is read the thing into a string, like so

    Code:
    string Fraction;
    cin >> Fraction;
    Then I would get two substrings of it, one just before the '/', and one just after, and convert them to integers. This may be a little more advanced than what's needed for your assignment, but that's what I'd do anyways.

  4. #4
    Cat without Hat CornedBee's Avatar
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    Quote Originally Posted by twomers
    Also, why do you need a function to get the num and denom?
    That's a valid question. The function's body is just a line of code.

    the:

    Code:
    cin >> numerator >> slash >> denominator;
    will require a key press of return after each variable
    This on the other hand is just wrong.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

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