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小学生四则运算出题程序 无操作界面java版 简单的运用java中一些基本操作

发布时间:2016-07-16 00:00:05
这是本学期java课中实验大纲里的第一个实验,这里简单做了一个无用户界面版本。import java.util.Random;import java.util.Scanner;public class MathTest { public static void main(Str ...

小学生四则运算出题程序  无操作界面java版 简单的运用java中一些基本操作

这是本学期java课中实验大纲里的第一个实验,这里简单做了一个无用户界面版本。

import java.util.Random;import java.util.Scanner;public class MathTest {  public static void main(String[] args) {    // TODO Auto-generated method stub        double right = 0;    double wrong = 0;    /*Scanner sc2 = new Scanner(System.in);    int num2 = sc2.nextInt();*/    for (int i = 0; i < 10; i++) {      System.out.println("第"+(i+1)+"道题,请在下方输入答案:");              //生成两个随机数    Random r1 = new Random();    int x = r1.nextInt(10)+1;    Random r2 = new Random();    int y = r2.nextInt(10)+1;    //生成随机运算符  + - * /    Random r3 = new Random();    int z = r3.nextInt(4);    char[] chs = {'+','-','*','/'};    String Operator = String.valueOf(chs[z]);        //生成题目    if(Operator.equals("+")){      System.out.println(x+"+"+y+"=");      boolean b = add(x,y);      if(b == true){        right++;System.out.println("bingo! ");      }else{        wrong++;System.out.println("oh~no ");      }      System.out.println("the right answer: "+(x+y));          }else if(Operator.equals("-")){      System.out.println(x+"-"+y+"=");      boolean b =minus(x,y);      if(b == true){        right++;System.out.println("bingo! ");      }else{        wrong++;System.out.println("oh~no ");      }      System.out.println("the right answer: "+(x-y));          }else if(Operator.equals("*")){      System.out.println(x+"×"+y+"=");      boolean b =times(x,y);      if(b == true){        right++;System.out.println("bingo! ");      }else{        wrong++;System.out.println("oh~no ");      }      System.out.println("the right answer: "+(x*y));    }else{      System.out.println(x+"÷"+y+"=");      boolean b =divide(x,y);      if(b == true){        right++;System.out.println("bingo! ");      }else{        wrong++;System.out.println("oh~no ");      }       System.out.println("the right answer: "+((float)x /(float) y));    }    System.out.println("-------------------------------");    }    System.out.println("您一共做对了"+right+"道题.");    System.out.println("您一共做错了"+wrong+"道题.");    if(wrong > 0){    System.out.println("正确率为"+(right/(wrong+right))*100+"%");    }else{      System.out.println("没法除了啊  。。。。");    }  }  private static boolean add(int x,int y) {    // TODO Auto-generated method stub    Scanner sc = new Scanner(System.in);    int num1 = sc.nextInt();    int result = x + y;    if(num1 == result){      return true;    }else{      return false;    }      }  private static boolean minus(int x,int y) {    // TODO Auto-generated method stub    Scanner sc = new Scanner(System.in);    int num1 = sc.nextInt();    int result = x - y;    if(num1 == result){      return true;    }else{      return false;    }      }  private static boolean times (int x,int y) {    // TODO Auto-generated method stub    Scanner sc = new Scanner(System.in);    int num1 = sc.nextInt();    int result = x * y;    if(num1 == result){      return true;    }else{      return false;    }    }  private static boolean divide(int x,int y) {    // TODO Auto-generated method stub    Scanner sc = new Scanner(System.in);    float num1 = sc.nextFloat();    float result =(float)x /(float) y;    if(num1 == result){      return true;    }else{      return false;    }  }}

原标题:小学生四则运算出题程序 无操作界面java版 简单的运用java中一些基本操作

关键词:JAVA

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