mathoperator.java

一些JAVA小游戏的实现！ 对JAVA基础学习很有帮助。

package day03;
import java.util.Scanner;
public class MathOperator {
	public static void main(String[] args) {
		int a1;
		int a2;
		int op;
		int answer;
		int num=0;
		
		Scanner sca=new Scanner(System.in);
		
		for(int i=0;i<10;i++){
			a1=(int)(Math.random()*100);
			a2=(int)(Math.random()*100);
			op=(int)(Math.random()*4);
			System.out.print(a1);
			switch(op){
			case 0:System.out.print("+");break;
			case 1:System.out.print("-");break;
			case 2:System.out.print("*");break;
			case 3:System.out.print("/");break;
			}
			System.out.print(a2+"=");
			answer=sca.nextInt();
			if(answer==getResult(a1,a2,op)){
				System.out.println("恭喜您，答对了！");
				num++;
			}else{
				System.out.println("不好意思，答错了！");
			}
		}//for end!
		
		System.out.println("您总共答对"+num+"道题!");
	}
	
	public static int getResult(int a1,int a2,int op){
		switch(op){
		case 0:return a1+a2;
		case 1:return a1-a2;
		case 2:return a1*a2;
		case 3:return a1/a2;
		}
		return 0;
	}

}