using System;
class Program
{
static string ConvertWhitespaceToSpace(string s) {
s = s.Replace('\r', ' ');
s = s.Replace('\n', ' ');
s = s.Replace('\t', ' ');
return s;
}
static void Main() {
string s = "c# vb.net\rc++ python\tphp\n";
s = ConvertWhitespaceToSpace(s);
Console.WriteLine(s);
}
}
/*
run:
c# vb.net c++ python php
*/