PairWork -四则运算

产生随机数，进行简单的四则运算。组内成员：于淼 刘芳芳package nenu.softWareProject;

import java.util.Random;
import java.util.Scanner;

public class PairWork1_calculator {
	public static void main(String[] args) {
		int n=10;

		int max=100;
        int min=1;
        Random random = new Random();
		for(int o=1;o<=n;o++){
			//产生小于等于30的随机数
			int  a = random.nextInt(max)%(max-min+1) + min;
			int  b = random.nextInt(max)%(max-min+1) + min;

			//产生1 2 3 4随机数分别代表加减乘除
			Random sig = new Random();
			int s = sig.nextInt(4);
			//加法
			if(s==1){
				int ansJia=a+b;
					System.out.println(a +"+" +b+"=");
					Scanner scan1=new Scanner(System.in);
					int  ans =scan1.nextInt();
					if(ans==ansJia){
						System.out.println("真棒！你做对了");
					}else{
						System.out.println("在仔细想想，你可以做对的！");
					}

					}
	  //减
			if(s==2){
				if(a>b){
					int ansJian=a-b;
					System.out.println(a +"-" +b+"=");
					Scanner scan2=new Scanner(System.in);
					int  ans =scan2.nextInt();
					if(ans==ansJian){
						System.out.println("真棒！你做对了");
					}else{
						System.out.println("在仔细想想，你可以做对的！");
					}
					}else{
						int ansJian=b-a;
						System.out.println(b +"-" +a+"=");
						Scanner scan2=new Scanner(System.in);
						int  ans =scan2.nextInt();
						if(ans==ansJian){
							System.out.println("真棒！你做对了");
						}else{
							System.out.println("在仔细想想，你可以做对的！");
						}
					}
				}
			//乘
			if(s==3){
				int ansCheng=a*b;
				System.out.println(a +"*" +b+"=");
				Scanner scan3=new Scanner(System.in);
				int  ans =scan3.nextInt();
				if(ans==ansCheng){
					System.out.println("真棒！你做对了");
				}else{
					System.out.println("在仔细想想，你可以做对的！");
				}
			}
			//除
			if(s==4){
					double ansChu=(double)(Math.round(a/b)/100.0);
					System.out.println(a +"*" +b+"=");
					Scanner scan4=new Scanner(System.in);
					int  ans =scan4.nextInt();
					if(ans==ansChu){
						System.out.println("真棒！你做对了");
					}else{
						System.out.println("在仔细想想，你可以做对的！");
					}
			}

		}
	}

}

运行结果为：