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First C# application and having problems

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phillover80	28 Jun, 2009 - 05:08 PM Post #1
New D.I.C Head Joined: 28 Jun, 2009 Posts: 9	I'm new to C# programming language. This is my first assignment that is supposed to convert a temperature from Fahrenheit to Celsius. It should use three different methods; one for input, one for the conversion and one to display the results. I've been working on this for a couple days and have taken out some things, added some things and switched some things around but I keep getting different errors. Can anyone take a look and tell me what I am doing wrong? Your help is very much appreciated. I though this was fairly simple at first but it's just not working for me. CODE using System; namespace TemperatureConverter { class FahrenheitConverter { //User Input static void Main() { double cTemp; double fTemp; InputValues(); ConvertToCelsius(fTemp); DisplayResults(cTemp); Console.Read(); } public static void InputValues() { string inputTemp; Console.Write("Please enter the Fahrenheit temperature: "); inputTemp = Console.ReadLine(); } //To convert from Fahrenheit to celsius public static double ConvertToCelsius(double fTemp) { return (fTemp - 32) * 5/9; } //Display the results public static void DisplayResults(double cTemp) { Console.Write("{0} degrees Fahrenheit is the same as "); Console.WriteLine("{1} degrees Celsius"); } } }
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SixOfEleven	RE: First C# Application And Having Problems 28 Jun, 2009 - 06:55 PM Post #2
lives.ToCode(); Joined: 18 Oct, 2008 Posts: 3,066 Thanked: 170 times Dream Kudos: 775 Expert In: C, C#, XNA, Game Programming, Programming Concepts My Contributions	The first thing I see that I would change is your InputValues method. You would want it to return the value that was inputted, like you returned the double in the ConvertToCelcius method. You would want to convert it to a double as when it is inputted it is a string. You can convert the string to a double using this method. CODE Double.Parse(inputTemp); [/cdoe] Then, in your main when you call the [b]InputValues[/b] method you would say: [code] fTemp = InputValues(); That should give you a good start on finishing things.
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eclipsed4utoo

RE: First C# Application And Having Problems

29 Jun, 2009 - 05:57 AM

Post #3

Not Your Ordinary Programmer

Joined: 21 Mar, 2008
Posts: 1,846

Thanked: 205 times
Dream Kudos: 500
Expert In: .NET

My Contributions

here is one way...


class Program
{
    static void Main(string[] args)
    {
        double cTemp = 0;
        double fTemp = 0;

        fTemp = InputValues();
        cTemp = ConvertToCelsius(fTemp);
        DisplayResults(fTemp, cTemp);
    }

    static double InputValues()
    {
        Console.Write("Please enter the Fahrenheit temperature: ");
        return double.Parse(Console.ReadLine());
    }

    static double ConvertToCelsius(double fTemp)
    {
        return (fTemp - 32) * 5 / 9;
    }

    static void DisplayResults(double fTemp, double cTemp)
    {
        Console.WriteLine("{0} degrees Fahrenheit is the same as {1} degrees Celsius", fTemp, cTemp);
        Console.Read();
    }
}

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phillover80	RE: First C# Application And Having Problems 29 Jun, 2009 - 04:45 PM Post #4
New D.I.C Head Joined: 28 Jun, 2009 Posts: 9	QUOTE(SixOfEleven @ 28 Jun, 2009 - 06:55 PM) The first thing I see that I would change is your InputValues method. You would want it to return the value that was inputted, like you returned the double in the ConvertToCelcius method. You would want to convert it to a double as when it is inputted it is a string. You can convert the string to a double using this method. CODE Double.Parse(inputTemp); [/cdoe] Then, in your main when you call the [b]InputValues[/b] method you would say: [code] fTemp = InputValues(); That should give you a good start on finishing things. Ok thats helpful thanks. I had that originally but I had it backwards and ended up deleting it.
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phillover80

RE: First C# Application And Having Problems

29 Jun, 2009 - 04:52 PM

Post #5

New D.I.C Head

Joined: 28 Jun, 2009
Posts: 9

QUOTE(eclipsed4utoo @ 29 Jun, 2009 - 05:57 AM)

here is one way...


class Program
{
    static void Main(string[] args)
    {
        double cTemp = 0;
        double fTemp = 0;

        fTemp = InputValues();
        cTemp = ConvertToCelsius(fTemp);
        DisplayResults(fTemp, cTemp);
    }

    static double InputValues()
    {
        Console.Write("Please enter the Fahrenheit temperature: ");
        return double.Parse(Console.ReadLine());
    }

    static double ConvertToCelsius(double fTemp)
    {
        return (fTemp - 32) * 5 / 9;
    }

    static void DisplayResults(double fTemp, double cTemp)
    {
        Console.WriteLine("{0} degrees Fahrenheit is the same as {1} degrees Celsius", fTemp, cTemp);
        Console.Read();
    }
}

Aha! I didnt know I had to give fTemp and cTemp a value at first. That was what I was missing when i first wrote my program.
This is the other line that threw me off.

CODE

return double.Parse(Console.ReadLine());

Thank you both for your help.
This is a great site.

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eclipsed4utoo	RE: First C# Application And Having Problems 29 Jun, 2009 - 06:16 PM Post #6
Not Your Ordinary Programmer Joined: 21 Mar, 2008 Posts: 1,846 Thanked: 205 times Dream Kudos: 500 Expert In: .NET My Contributions	QUOTE(phillover80 @ 29 Jun, 2009 - 07:52 PM) QUOTE(eclipsed4utoo @ 29 Jun, 2009 - 05:57 AM) here is one way... c# class Program { static void Main(string[] args) { double cTemp = 0; double fTemp = 0; fTemp = InputValues(); cTemp = ConvertToCelsius(fTemp); DisplayResults(fTemp, cTemp); } static double InputValues() { Console.Write("Please enter the Fahrenheit temperature: "); return double.Parse(Console.ReadLine()); } static double ConvertToCelsius(double fTemp) { return (fTemp - 32) * 5 / 9; } static void DisplayResults(double fTemp, double cTemp) { Console.WriteLine("{0} degrees Fahrenheit is the same as {1} degrees Celsius", fTemp, cTemp); Console.Read(); } } Aha! I didnt know I had to give fTemp and cTemp a value at first. That was what I was missing when i first wrote my program. This is the other line that threw me off. CODE return double.Parse(Console.ReadLine()); Thank you both for your help. This is a great site. You aren't required to give the "doubles" a value, but it's good programming practice to always give variables a default value.
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