尚硅谷视频课程java第五章

java第五章

1. 位运算符

2. 获取输入

package com.example.helloworld;

import java.util.Scanner;

public class HelloWorld {
    public static void main(String[] args) {
        Scanner scan = new java.util.Scanner(System.in);
        int num = scan.nextInt();
        //String num = scan.next();
        System.out.println(num);
    }
}

package com.example.helloworld;

import java.util.Scanner;

public class HelloWorld {
    public static void main(String[] args) {
        Scanner scan = new java.util.Scanner(System.in);
        String num = scan.next();
//        char c = num[0]; 写法报错
        char c = num.charAt(0);
        System.out.println(c);
    }
}