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  • 作业五 5.2 5.3

    一.代码源

    package aaa;
    import java.text.DecimalFormat;
    import java.util.Scanner;
    public class Dada {
    	
    	public static void main(String[] args) {
    		int condition=1 ;
    		Dada dada = new Dada();
    		Scanner scanner = new Scanner(System.in);
    		while(condition==1){
    		System.out.print("请输入第一个数:");
    		double x = scanner.nextDouble();
    		System.out.print("请输入第二个数:");
    		double y = scanner.nextDouble();
    		System.out.print("请输入运算符:");
    		String s = scanner.next();
    		char z = s.charAt(0);
    		Test test=new Test();
    		test.yunsuan(x, y, z);
    		System.out.print("是否继续?1是  其他为否");
    		condition = scanner.nextInt();}
    		}
    	}
    	
    
    package aaa;
    
    import java.text.DecimalFormat;
    public class Test{
    public static int yunsuan(double x,double y,Character z){
    		DecimalFormat r=new DecimalFormat(); 
    		if(z.equals('+')){
    			System.out.println(x+"+"+y+"=" + r.format((x+y)));
    		} 
    		return 1;
    		}
    public static int yunsuan1(double x,double y,Character z){
    	DecimalFormat r=new DecimalFormat();
    	if(z.equals('-')){
    		System.out.println(x+"-"+y+"=" + r.format((x-y)));}
    	return 1;}
    public static int yunsuan2(double x,double y,Character z){
    	DecimalFormat r=new DecimalFormat();
    	 if(z.equals('*')){
    			System.out.println(x+"*"+y+"=" + r.format((x*y)));
    		}return 1;}
    public static int yunsuan3(double x,double y,Character z){
    	DecimalFormat r=new DecimalFormat();
    	if(z.equals('/')){
    		if(y==0){
    			System.out.println("被除数不能为0");
    		} else{
    			System.out.println(x+"/"+y+"=" + r.format((x/y)));
    		}
    		
    		
    		}
    	return 1;
    
    	}
    }
    

     二.测试结果

    三.感想

         基础太差了,实力跟不上想法,虽然现在在努力的解决实力问题,可却不是短时间内可以改变的,所以老师的要求基本都没有怎么实现,但之后我一定会补交一份完整的作业!

     

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  • 原文地址:https://www.cnblogs.com/xhy1210/p/4488682.html
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