using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(\d+[-–](?:\d+|\(\d+([+\-*/^]\d+[ ]?[+\-*/^][ ]?\d+)?\)))";
string input = @"(0–(2^63 - 1))
(1-(2^16 - 2))
(1-29999984)
(3-32)";
foreach (Match m in Regex.Matches(input, pattern))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx