Regex rx = new Regex(@"^[a-zA-Z]+$");
string s = Console.ReadLine();
while (s != "exit")
{
Match m = rx.Match(s);
if (m.Success)
{
Console.WriteLine("yes");
}
else
{
Console.WriteLine("no");
}
s = Console.ReadLine();
}
测试程序如下:
Regex rx = new Regex(@"^[a-zA-Z]+$");
string s = Console.ReadLine();
while (s != "exit")
{
Match m = rx.Match(s);
if (m.Success)
{
Console.WriteLine("yes");
}
else
{
Console.WriteLine("no");
}
s = Console.ReadLine();
}