import java.util.Random;
import java.util.Scanner;public class MathTest {public static void main(String[] args) {// TODO Auto-generated method stubdouble 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 stubScanner 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 stubScanner 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 stubScanner 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 stubScanner sc = new Scanner(System.in);float num1 = sc.nextFloat();float result =(float)x /(float) y;if(num1 == result){return true;}else{return false;}}}