Educoder题目：Java入门 - 分支结构答案解析

Java分支结构之 if…else IfProject/src/step2/HelloIfStep2.java

package step2;

import java.util.Scanner;

public class HelloIfStep2 {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		
			System.out.println("请输入学员成绩：");
			int score = input.nextInt();
			if(score>85) {
				System.out.println("优，非常棒！");
			} else{
				System.out.println("良，下次加油！");
			}
		
	}
}

if语句测试题 第1题答案：C 第2题答案：C 第3题答案：D Java分支结构之多重if IfProject/src/step3/HelloStep3.java

package step3;

import java.util.Scanner;

public class HelloStep3 {
	public static void main(String[] args) {
		System.out.println("星级成绩评定系统");
		System.out.println("请输入成绩：");
		Scanner sc = new Scanner(System.in);
		
		int scope = sc.nextInt();
		if(scope >=90) {
			System.out.print("*****五星成绩");
		} else if(scope>=80 && scope<90) {
			System.out.print("****四星成绩");
		} else if(scope>=70 && scope<80) {
			System.out.print("***三星成绩");
		} else if(scope>=60 && scope<70) {
			System.out.print("**俩星成绩");
		} else {
			System.out.print("无星成绩");
		}
		
		
		
		
		
		
		
	}
}

Java分支结构之Switch IfProject/src/step4/HelloSwitch.java

package step4;

import java.util.Scanner;

public class HelloSwitch {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		System.out.println("请输入月份：");
		
		int input = sc.nextInt();	//获取输入的月份
		
        //通过输入的月份来判断当前季节并输出
		
		switch(input) {
			case 3:
			case 4:
			case 5:
			System.out.print(input+"月是春天");
				break;
			case 6:
			case 7:
			case 8:
			System.out.print(input+"月是夏天");
				break;
			case 9:
			case 10:
			case 11:
			System.out.print(input+"月是秋天");
				break;
			default:
			System.out.print(input+"月是冬天");
				break;

		}
	
		
		
		
	}
}

Switch语句测试题 第1题答案：CD 来吧，我是BOSS！ src/step5/Practice.java

package step5;

import java.util.Scanner;

public class Practice {
    
    	final static Scanner sc = new Scanner(System.in);	//创建扫描仪

		//第一题
		public void first(){
			System.out.println("请输入人数：");
            int input = sc.nextInt();		//获取输入的数据
            
			
			
			if(input >10) {
				System.out.println("打全场");
			} else {
				System.out.println("打半场");	
			}
			
			
			
			
		}
		
		//第二题
		public void second(){
			System.out.println("请输入今天星期几：");
            int input = sc.nextInt();		//获取输入的数据
            
			
			if(input == 1) {
				System.out.println("今天吃米饭");
			} else if(input == 2) {
				System.out.println("今天吃牛排");
			} else if(input == 2) {
				System.out.println("今天吃鸡排");
			} else {
				System.out.println("今天吃红烧肉");
			}
			

			
			
		}	
		
		//第三题
		public void third(){
			System.out.println("请输入今天星期几：");
            int input = sc.nextInt();		//获取输入的数据
            
			
			switch(input) {
				case 1:
					System.out.println("今天吃米饭");
					break;
				case 2:
					System.out.println("今天吃牛排");
					break;
				case 3:
					System.out.println("今天吃鸡排");
					break;
				default:
					System.out.println("今天吃红烧肉");
					break;
			}
			
			
			
			
		}
}