using System; using System.Collections.Generic; using System.Text; using System.Text.RegularExpressions;namespace ConsoleApplication4 { class Program { static void Main(string[] args) { Regex reg = new Regex(@"^(sin|lg|ln|cos)\(([1-9]\d*)|\d\)$"); while (true) { Console.WriteLine(reg.IsMatch(Console.ReadLine())); } } } }
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;namespace ConsoleApplication4
{
class Program
{
static void Main(string[] args)
{
Regex reg = new Regex(@"^(sin|lg|ln|cos)\(([1-9]\d*)|\d\)$");
while (true)
{
Console.WriteLine(reg.IsMatch(Console.ReadLine()));
}
}
}
}
还是乖乖的异常捕获吧...