随机加法运算器

[java]代码库

package day04;
import java.util.Scanner;
//随机加法运算器
public class Addition {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int score = 0; //得分
		for(int i=1;i<=10;i++){ //10次
			int a = (int)(Math.random()*100); //加数a
			int b = (int)(Math.random()*100); //加数b
			int result = a+b; //存结果
			System.out.println("("+i+")"+a+"+"+b+"=?"); //1.出题
			
			System.out.println("算吧!");
			int answer = scan.nextInt(); //2.答题
			
			if(answer==-1){ //3.判题
				System.out.println("下次再来吧!");
				break;
			}
			if(answer==result){ 
				System.out.println("答对了");
				score += 10; //答对1题加10分
			}else{
				System.out.println("答错了");
			}
			
		}
		System.out.println("score="+score);
	}
}