How do I check if my method is correct?

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I have to write a ComputeSalesTax() method that receives a sales amount and a tax rate, and calculates and it displays the sales tax in the following format 'The tax on 100.00 at 10% is 10.00'.

What I have tried:

This is what I got:

using System;
class Program
{
    static void ComputeSalesTax(double saleAmount, double taxRate, double tax)
    {
        saleAmount = 100;
        taxRate = 10;
        tax = taxRate * saleAmount; 
        Console.WriteLine("The tax on {0} at {1} is {2}",
        saleAmount.ToString("C"),
        taxRate.ToString("P"), tax.ToString("F"));
    }
}

I'm not sure if I'm correct because I seem to get the following error:

Error CS5001: Program does not contain a static 'Main' method suitable for an entry point.

Posted 30-May-18 7:36am

Member 13652359

Updated 30-May-18 8:06am

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[no name] 30-May-18 17:35pm

tax = (taxRate * saleAmount) / 100.0;

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OriginalGriff · Accepted Answer · 2018-05-30T08:08:00

Every C# application .EXE file must contain an entry point - it's where the application begins executing when you try to run it. Without that entry point, it's not a EXE file (though it can still be an Assembly, but don't worry about that for the moment - you'll get to it later)

The entry point you need it a method called Main which can call your new function. Oh, and by the way - your homework calls for two parameters, not three!

using System;

namespace GeneralTestingConsole
    {
    class Program
        {
        public static void Main()
            {
            ComputeSalesTax(100.0, 10.0);
            ComputeSalesTax(100.0, 17.5);
            }
        static void ComputeSalesTax(double saleAmount, double taxRate)
            {
            double tax = taxRate * saleAmount;
            Console.WriteLine("The tax on {0} at {1} is {2}",
                              saleAmount.ToString("C"),
                              taxRate.ToString("P"), tax.ToString("F"));
            }
        }
    }