fork(11) download
copy 
  1. using System;
  2. using System.Text.RegularExpressions;
  3.  
  4. public class Test
  5. {
  6.         public static Decimal ExtractDecimalFromString(string str)
  7.         {
  8.  
  9. 	        Regex digits = new Regex(@"^\D*?((-?(\d+(\.\d+)?))|(-?\.\d+)).*");
  10.         	Match mx = digits.Match(str);
  11.         	//Console.WriteLine("Input {0} - Digits {1} {2}", str, mx.Success, mx.Groups);
  12.  
  13.             return mx.Success ? Convert.ToDecimal(mx.Groups[1].Value) : 0;
  14.         }
  15.  
  16.         public static void ProcessString(string str) {
  17.         	Console.WriteLine("{0} -> {1}", str, ExtractDecimalFromString(str));
  18.         }
  19.     public static void Main()
  20. 	{
  21. 		Console.WriteLine("Conversions");
  22. 		ProcessString("12345");
  23. 		ProcessString("12345.678");
  24. 		ProcessString("I have $.678 to my name");
  25. 		ProcessString("I have $-.678 to my name");
  26. 		ProcessString("-12345.678");
  27. 		ProcessString("-12345.678 987");
  28. 		ProcessString("  b987z  ");
  29. 		ProcessString("Bill: -12345.678 OK");
  30. 		ProcessString("Hello World");
  31. 	}
  32. }
Success #stdin #stdout 0.09s 24464KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Conversions
12345 -> 12345
12345.678 -> 12345.678
I have $.678 to my name -> 0.678
I have $-.678 to my name -> -0.678
-12345.678 -> -12345.678
-12345.678 987 -> -12345.678
  b987z   -> 987
Bill: -12345.678 OK -> -12345.678
Hello World -> 0
https://ideone.com/zRNfBv
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!