Need help with accepting decimals as input in C#
10,585
Solution 1
I would recommend using Decimal.TryParse. This pattern is very safe since it traps the exceptions and returns a boolean to determine the success of the parse operation.
http://msdn.microsoft.com/en-us/library/system.decimal.tryparse.aspx
Solution 2
Math.Pow doesnt take in decimal. There is already another question on SO about Math.Pow and decimal. Use double.
static void Main(string[] args)
{
double sideA = 0;
double sideB = 0;
double sideC = 0;
Console.Write("Enter an integer for Side A ");
sideA = Convert.ToDouble(Console.ReadLine());
Console.Write("Enter an integer for Side B ");
sideB = Convert.ToDouble(Console.ReadLine());
sideC = Math.Pow((sideA * sideA + sideB * sideB), .5);
Console.Write("Side C has this length...");
Console.WriteLine(sideC);
Console.ReadLine();
}
Author by
Thomas
Updated on June 04, 2022Comments
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Thomas about 2 years
I have written a program in C# that runs the Pythagorean Theorem. I would love some help on allowing the program to accept decimal points from the user input. This is what I have.
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Project_2 { class Program { static void Main(string[] args) { int sideA = 0; int sideB = 0; double sideC = 0; Console.Write("Enter a integer for Side A "); sideA = Convert.ToInt16(Console.ReadLine()); Console.Write("Enter a integer for Side B "); sideB = Convert.ToInt16(Console.ReadLine()); sideC = Math.Pow((sideA * sideA + sideB * sideB), .5); Console.Write("Side C has this length..."); Console.WriteLine(sideC); Console.ReadLine(); } } }
I have been trying to research this by using the Math.Abs and so on only to receive build errors. Help in the write path would be greatly appreciated.
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LukeH almost 13 yearsA nitpick: Generally speaking, the various
TryParse
patterns don't "trap" exceptions; they avoid them altogether. -
Thomas almost 13 yearsThat was the trick. My error was with the assignments of the sides. Thank you very much for your help!
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hivie7510 almost 13 yearsFair enough, but they do not expose any exception to the user. That is why this is a good pattern. I use this pattern in custom code as well.
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Peter almost 7 yearsor try "Enter a decimal for Side B " ;)