日期:2014-05-20 浏览次数:20986 次
import java.io.*;
public class TestN2
{
public static void main(String args[]) throws IOException
{ double n,x;
try
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
n=Integer.parseInt(br.readLine());
int s=1;
for( double i=1;i<=n;i++ )
{
s*=i;
}
System.out.println("n!="+s);
}
catch(ArrayIndexOutOfBoundsException e)
{
System.out.println("命令行没有输入参数或参数不足");
}
catch(NumberFormatException e)
{
System.out.println("输入的参数不是数字");
}
}
}