EduCoder Java程序设计---Java入门（第四章）- 分支结构答案

深碍√TFBOYSˉ_ 2023-09-30 09:13 7阅读 0赞

#### 第1关：Java分支结构之 if...else ####

package step2;
    
    import java.util.Scanner;
    
    public class HelloIfStep2 {
    	public static void main(String[] args) {
    		Scanner input = new Scanner(System.in);
    		/******start******/
    		System.out.println("请输入学员成绩：");
    		int score = input.nextInt();
    		if(score>=85&&score <=100){
    			System.out.println("优，非常棒！");
    		}
    		else{
    			System.out.println("良，下次加油！");
    		}
    				
    		/******end******/
    	}
    }

#### 第2关：if语句测试题 ####

![watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA54ix5L2g55qE6Zi_55m9fg_size_20_color_FFFFFF_t_70_g_se_x_16][]

![watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA54ix5L2g55qE6Zi_55m9fg_size_20_color_FFFFFF_t_70_g_se_x_16 1][]

#### ![watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA54ix5L2g55qE6Zi_55m9fg_size_20_color_FFFFFF_t_70_g_se_x_16 2][] ####

#### 第3关：Java分支结构之多重if ####

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);
    		/******start******/
    		int score = sc.nextInt();
    		if(score>=90&&score<=100){
    			System.out.println("*****五星成绩");
    		}
    		else if(score<90&&score>=80){
    			System.out.println("****四星成绩");
    		}
    		else if (score<80&&score>=70) {
    			System.out.println("***三星成绩");
    		}
    
    		else if(score<70&&score>=60){
    			System.out.println("**俩星成绩");
    		} 
    
    		else {
    			System.out.println("无星成绩");
    		}
    		
    		
    		/******end******/
    	}
    }

#### 第4关：Java分支结构之Switch ####

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
    		/*****start*****/
    		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;
    
    		}
    		
    		/*****end*****/
    		
    	}
    }

#### 第5关：Switch语句测试题 ####

![watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA54ix5L2g55qE6Zi_55m9fg_size_20_color_FFFFFF_t_70_g_se_x_16 3][]

#### 第6关：来吧，我是BOSS！ ####

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
                
    			/*****start*****/
    			if (input<10&&input>0) {
    				System.out.println("打半场");
    			} else {
    				System.out.println("打全场");
    			}
    			
    			/*****end*****/
    		}
    		
    		//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
                
    			/*****start*****/
    			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 ==3)
    				System.out.println("今天吃鸡排");
    			
    			else 
    				System.out.println("今天吃红烧肉");
    
    			/*****end*****/
    		}	
    		//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
                
    			/*****start*****/
    			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;
    			}
    			/*****end*****/
    		}
    }

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