• java上机练习


    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 hello;
    
    import java.util.Scanner;
    public class apple {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
             Scanner sc=new Scanner(System.in);
             System.out.print("请输入数字X的值:");
             int x=sc.nextInt();
             if(x==1||x==5||x==10){
            	 System.out.println("x="+x);
             }else{
            	 System.out.println("x=none");
             }
    	}
    
    }
    

      

    2.用switch结构实现第1题

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

      

    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 hello;
    
    import java.util.Scanner;
    public class apple {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
             Scanner sc=new  Scanner(System.in);
             System.out.println("请输入数值:");
             int x=sc.nextInt();
             if(x%5==0&&x%6==0){
            	 System.out.println(x+"能被5和6整除");
             }else if(x%5==0){
            	 System.out.println(x+"能被5整除");
             }else{
            	 System.out.println(x+"不能被5和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 hello;
    
    import java.util.Scanner;
    public class apple {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
             Scanner sc=new  Scanner(System.in);
             System.out.println("请输入分数值:");
             int x=sc.nextInt();
             if(x<0||x>100){
            	 System.out.println("打印分数无效");
             }else if(x/10>=9&&x/10<=10){
            	 System.out.println("A");
             }else if(x/10>=8&&x/10<=9){
            	 System.out.println("B");
             }else if(x/10>=7&&x/10<=8){
            	 System.out.println("C");
             }else if(x/10>=6&&x/10<=7){
            	 System.out.println("D");
             }else if(x/10<6){
            	 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 hello;
    
    import java.util.Scanner;
    public class apple {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
             Scanner sc=new  Scanner(System.in);
             System.out.println("请输入x的值:");
             int x=sc.nextInt();
             System.out.println("请输入y的值:");
             int y=sc.nextInt();
             System.out.println("请输入z的值:");
             int z=sc.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"+x+","+z+","+x);
             }else if(y>z&&z>x){
            	 System.out.println("输出"+z+","+x+","+y);
             }else if(z>y&&y>x){
            	 System.out.println("输出"+x+","+z+","+y);
             }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/qq007/p/12573471.html
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