using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\d*\.?\d+(?:/\d*\.?\d+)*(?:\s+(?:and|to)\s+\d*\.?\d+(?:/\d*\.?\d+)*)*";
string input = @"He is 1 and 1/2 years old. He is .5 years old and he is 5 years old. He is between 9 to 11 or 9 to 9 and 1/2. He was born 11/12/20
Score 1 and 2 sometimes, often 1 and 1/2, or 2.5 or 3 and 1/3.";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
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