• 第四周上机作业


    1.编写程序, 输入变量x的值,如果是1,输出x=1,如果是5,输出x=5,如果是 10,输出 x=10,除了以上几个值,都输出x=none。(知识点:if条件语句)

    package tx;
    
    import java.util.Scanner;
    
    public class test {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub;
    		Scanner input=new Scanner(System.in);
    		System.out.println("输入x的值");
    		int x=input.nextInt();
    		if (x==1) {
    			System.out.println(x=1);
    		}else if(x==5){
    			System.out.println(x=5);
    		}else if(x==10){
    			System.out.println(x=10);
    		}else{
    			System.out.println("x=none");
    		}
    	}
    }
    

      

    2.用switch结构实现第1题

    package tx;
    
    import java.util.Scanner;
    
    public class test {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub;
    		Scanner input=new Scanner(System.in);
    		System.out.println("输入x的值");
    		int x=input.nextInt();
    		switch(x){
    		case 1:
    			System.out.println(x=1);
    			break;
    		case 5:
    			System.out.println(x=5);
    			break;
    		case 10:
    			System.out.println(x=10);
    			break;
    		default:
    			System.out.println("x=none");
    			break;
    		}
    	}
    }
    

      

    3.判断一个数字是否能被5和6同时整除(打印能被5和6整除),或只能被5整除(打印能被5整 除),或只能被6整除,(打印能被6整除),不能被5或6整除,(打印不能被5或6整除)

    package tx;
    
    import java.util.Scanner;
    
    public class test {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub;
    		Scanner input=new Scanner(System.in);
    		System.out.println("输入一个值");
    		int x=input.nextInt();
    		if (x%5==0&&x%6==0) {
    			System.out.println("能被5和6整除");
    		}else if(x%5==0){
    			System.out.println("能被5整除");
    		}else if(x%6==0){
    			System.out.println("能被6整除");
    		}else if(x%5!=0||x%6!=0){
    			System.out.println("不能被5或6整除");
    		}
    	}
    }
    

      

    4.输入一个0~100的分数,如果不是0~100之间,打印分数无效,根据分数等级打印 A(90-100),B(80-89),C,D,E(知识点:条件语句if elseif)

    package tx;
    
    import java.util.Scanner;
    
    public class test {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub;
    		Scanner input=new Scanner(System.in);
    		System.out.println("输入一个0~100的分数");
    		int x=input.nextInt();
    		if(x>=90&&x<100){
    			System.out.println("A");
    		}else if(x>=80&&x<90){
    			System.out.println("B");
    		}else if(x>=70&&x<80){
    			System.out.println("C");
    		}else if(x>=60&&x<70){
    			System.out.println("D");
    		}else if(x<60){
    			System.out.println("E");
    		}
    	}
    }
    

      

    5.输入三个整数x,y,z,请把这三个数由小到大输出(知识点:条件语句)

    package tx;
    
    import java.util.Scanner;
    
    public class test {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub;
    		Scanner input=new Scanner(System.in);
    		System.out.println("输入一个三个整数x,y,z");
    		int x=input.nextInt();
    		int y=input.nextInt();
    		int z=input.nextInt();
    		if(x>y&&y>z){
    			System.out.println("输出"+z+","+y+","+x);
    		}else if(x>z&&z>y){
    			System.out.println("输出"+y+","+z+","+x);
    		}else if(y>x&&x>z){
    			System.out.println("输出"+z+","+x+","+y);
    		}else if(y>z&&z>x){
    System.out.println("输出"+x+","+z+","+y);
    }else if(z>y&&y>x){
    System.out.println("输出"+x+","+y+","+z);
    		}else if(z>x&&x>y){
    			System.out.println("输出"+y+","+x+","+z);
    		}
    	}
    }
    

      

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  • 原文地址:https://www.cnblogs.com/komorebi-jane/p/12573462.html
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