zzuli 1023

java 读入单个字符

import java.util.Scanner;

public class Main{
    public static void main(String args[]){
        Scanner cin = new Scanner(System.in);

        char ch;

        ch = cin.next().charAt(0);

        if(ch >= 'a' && ch <= 'z')
            ch -= 32;

        System.out.println(ch);
    }
}