题解 | #统计大写字母个数#

import java.util.*;

public class Main{
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        int sum = 0;
        while(sc.hasNext()){
            String str = sc.nextLine();
            for(int i = 0;i<str.length();i++){
            //str.charAt(i)  i对应字符串下标
                char ch = str.charAt(i);
                if(ch >= 'A' && ch <= 'Z'){
                sum++;
                }
            }
        }
        System.out.println(sum);
    }
}