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!