import java.io.*;

class Chp5_T4_1
{
	public static void main(String args[]) throws IOException
	{
		char ch;
		System.out.println("輸入一個字母:");
		ch=(char)System.in.read();
		if(ch>=97&&ch<=122)
			ch=(char)(ch-32);
		System.out.println(ch);
	}
}