Thread: im havin trouble with this code...if anyone could help that be nice

  1. #1
    Registered User
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    Jun 2003
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    im havin trouble with this code...if anyone could help that be nice

    im havin trouble with gettin this code to work...it will compile but im not gettin the results i want...

    heres what the code looks like:

    #include <iostream.h>
    #include <iomanip.h>

    const int MAX=10;
    const int INPUT_SENTINEL=0;
    int a,b,m,g,results;
    void printheader();

    void main ()
    {

    cout<<"***************************"<<endl;
    cout<<"**Gas Calculation Program**"<<endl;
    cout<<"***************************"<<endl;
    cout<<endl<<endl;
    cout<<"Please enter the starting mileage: ";
    cin>>a;
    cout<<"To stop the reading press 0 for miles and gallons....to see results type in results for miles."<<endl;
    cout<<endl;
    cout<<"What was your stopping point in miles: ";
    cin>>m;
    cout<<endl;
    cout<<"How many gallons of gas did you need to travel this far: ";
    cin>>g;
    cout<<endl;





    if ((m<0) && (g<0))
    {
    cout<<"Please enter in a positive integer for miles and gallons."<<endl;
    }
    else
    if((m>0) && (g>0))

    {

    cout<<"To stop the reading press 0 for miles and gallons."<<endl;
    cout<<endl;
    cout<<"What was your stopping point in miles: ";
    cin>>m;
    cout<<endl;
    cout<<"How many gallons of gas did you need to travel this far: ";
    cin>>g;
    cout<<endl;
    }



    return;
    }

    void printheader ()
    {
    cout<<endl;
    cout<<setw(15)<<"Odometer"<<setw(5)<<"Odometer"<<s etw(5)<<"Fuel"<<setw(5)<<"Miles"<<setw(5)<<"Fuel"< <setw(5)<<"Miles"<<setw(5)<<"Mpg"<<setw(5)<<"Mpg"< <endl;
    cout<<setw(15)<<"(begin)"<<setw(6)<<"(end)"<<setw( 8)<<"(tank)"<<setw(7)<<"(tank)"<<setw(7)<<"(trip)" <<setw(7)<<"(trip)"<<setw(7)<<"(tank)"<<setw(7)<<" (trip)"<<endl;
    cout<<endl;
    cout<<"Miles: "<<b<<endl;
    cout<<"Gallons: "<<g<<endl;
    cout<<endl;
    cout<<setw(18)<<a<<setw(11)<<b<<setw(13)<<g<<setw( 9)<<endl;
    }

    i think the problem may be in the if else loop but im not totally sure....if anyone out there can help me send me a PM b4 950 am PST....thanks to those who could help

  2. #2
    End Of Line Hammer's Avatar
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    Once you've read this:
    http://cboard.cprogramming.com/showt...threadid=13473
    edit your original post and apply code tags thanks.
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

  3. #3
    carry on JaWiB's Avatar
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    Seattle, WA
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    change the "&&" in the if statement (first part of it) to "||" is at least one thing

    also change "void main()" to "int main()" and then "return 0" at the end.

    also it sounds like you are trying to loop until they enter 0, but there is no loop...you could use a do...while() loop and use check whether m and g are equal to zero for the condition
    "Think not but that I know these things; or think
    I know them not: not therefore am I short
    Of knowing what I ought."
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  4. #4
    Toaster Zach L.'s Avatar
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    2,686
    What results are you getting/expecting?

    An if/else construction isn't a loop, just a control structure. Also, it looks like printheader ( ) is never called.
    The word rap as it applies to music is the result of a peculiar phonological rule which has stripped the word of its initial voiceless velar stop.

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