Programming in C# question

Question

After creating this code:

Console.WriteLine("Hello, and Welcome to Shell Bomber!\n");

Console.WriteLine("In this game you will calculate the distance\n");

Console.WriteLine("a shell will rise and travel along the ground ^_^\n");

Console.WriteLine("theta = ?");           // initial angle that you will ask for from the user

double theta = Double.Parse(Console.ReadLine());

Console.WriteLine("v_o = ?");          // initial velocity that you will ask for from the user

double v_o = Double.Parse(Console.ReadLine());

Console.WriteLine("Calculate v_ox");       //Calculate vox = v_ocos(theta

double v_ox = v_o * Math.Cos(theta);      //Use the Math.Cos(theta) method

theta = theta * Math.PI / 180.0;    // Converts from degrees to radians

Console.ReadLine();

Is the program automatically going to convert the value of double v_ox = v_o * Math.Cos(theta) to a value from the user's input of an angle for theta and an initial value? Because when I run it, the program is not calculating the value? Did I do something wrong or is that just how I made it work?

What makes you think it's not calculating the value? Are you viewing it in debug mode? — Joel Etherton
– Joel Etherton, Commented Feb 3, 2010 at 2:02
This is effectively a duplicate of stackoverflow.com/questions/2189087/…. — jason
– jason, Commented Feb 3, 2010 at 2:06

Reed Copsey · Accepted Answer · 2010-02-03 02:04:42Z

3

You need to convert theta into radians before you calculate v_ox.

Once you've done that, just write the value to the console:

Console.WriteLine("Calculate v_ox");       //Calculate vox = v_ocos(theta 

theta = theta * Math.PI / 180.0;    // Converts from degrees to radians 
double v_ox = v_o * Math.Cos(theta);      //Use the Math.Cos(theta) method 

Console.WriteLine("v_ox == {0}", v_ox); // Show this, if you want to see the value

Console.ReadLine();

answered Feb 3, 2010 at 2:04

Reed Copsey

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Jay · Accepted Answer · 2010-02-03 02:04:47Z

3

If you mean the program isn't showing you the value, it is because you never WriteLine() the result.

answered Feb 3, 2010 at 2:04

Jay

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slugster · Accepted Answer · 2010-02-03 02:04:29Z

1

Are you just missing the line where you output the result to the console? Maybe something like this:

Console.WriteLine("The calculated value is: {0}", theta);

answered Feb 3, 2010 at 2:04

slugster

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