console application for validating user input for given patt

Question

1. Write a console application for validating user input for given patteren? (123)-(3215)-(874)-(789) ==== è Correct input pattern (323)-(678)-(6587)-(654) ==== è Correct input pattern (312)-(344)-(543)-(453) ==== è wrong input pattern

Vulpes · Answer

Try this: using System; using System.Text.RegularExpressions; class Program { static string regExp1 = @$\d{3}$-$\d{4}$-$\d{3}$-$\d{3}$; static string regExp2 = @$\d{3}$-$\d{3}$-$\d{4}$-$\d{3}$; static void Main() { while(true) { Console.Write(Enter pattern or q to quit : ); string pattern = Console.ReadLine(); if (pattern.ToLower() == q) break; bool isValid = Validate(pattern); if(isValid) { Console.WriteLine({0} is correct pattern); } else { Console.WriteLine({0} is wrong pattern); } } } static bool Validate(string pattern) { return Regex.IsMatch(pattern regExp1) || Regex.IsMatch(pattern regExp2); } } The input/output is: Enter pattern or q to quit : (123)-(3215)-(874)-(789) (123)-(3215)-(874)-(789) is correct Enter pattern or q to quit : (323)-(678)-(6587)-(654) (323)-(678)-(6587)-(654) is correct Enter pattern or q to quit : (312)-(344)-(543)-(453) (312)-(344)-(543)-(453) is wrong Enter pattern or q to quit : q

RAGHUNATH · Answer

thank you so much for giving me answer