floating point values

This is a discussion on floating point values within the C++ Programming forums, part of the General Programming Boards category; i am trying to do the following: program that reads two floating-point values representing angles and displays a message stating ...

  1. #1
    Registered User
    Join Date
    Dec 2005
    Posts
    12

    floating point values

    i am trying to do the following:

    program that reads two floating-point values representing angles and displays a message stating which angle has the greater tangent value. Note that the trigonometric functions in the math library expect angles in radians, not degrees. 360 degrees = 2 x pi radians, so 45 degrees would be about 0.785 radians.

    I have come up with code that takes in 2 numbers and displays the highest values. What I am stuck on is the calculations part. I am searching online and reading the books. Any help in this area will be great. Here is the code I have so far:

    Code:
    #include <iostream>
    
    using std::cout;
    using std::cin;
    using std::endl;
    
    
    
    int main()
    
    {
    
    float x,y;
    
    cout<< "Enter the first angle: ";
    cin>> x;
    
    cout<< "Enter the second angle: ";
    cin>> y;
    
    
    if ( x > y )
    cout << " The highest angle is "<< x <<endl;
    
    else
    cout<< "The highest angle is "<< y <<endl;
    }

  2. #2
    ^ Read Backwards^
    Join Date
    Sep 2005
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    Earth
    Posts
    282
    Code:
    (acos(-1) * user_input) /180;
    Converts it to radians.

    acos(-1) = arccos(-1) = Pi


    Though, in your code you use no trig functions so why does it matter.
    Also though, just because a number is negative does not mean it is a smaller angle, but the < > will take negative numbers as smaller.
    Last edited by Enahs; 12-14-2005 at 09:32 AM.

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