Mega Code Archive

 

Categories / C# Book / 11 Regular Expression Basics

 

0657 U.S. Social Security numberphone number

using System; using System.Text.RegularExpressions; class Program { static void Main(string[] args) { string ssNum = @"\d{3}-\d{2}-\d{4}"; Console.WriteLine (Regex.IsMatch ("111-11-1111", ssNum)); string phone = @"(?x) ( \d{3}[-\s] | \(\d{3}\)\s? ) \d{3}[-\s]? \d{4}"; Console.WriteLine (Regex.IsMatch ("111-111-1111",phone)); Console.WriteLine (Regex.IsMatch ("(111) 111-1111", phone)); } } The output: True True True