public int generateNumber(int random){
Random generator = new Random();
int a = generator.nextInt(random);
return random;
}
.equal()只判断值是否相等
package mathquiz;
import java.util.Random;
import java.util.Scanner;
public class QuizMain {
public static void main(String[] args) {
int score=0;
int rounds=3;
//add your code here
QuizMain timu = new QuizMain();
Scanner daan = new Scanner(System.in);
boolean isvalid = false;
while(!isvalid) {
double cAnswer = timu.generateQuestion();
while(!isvalid && !daan.hasNextDouble()) {
String str = daan.next();
if(str.toLowerCase().equals("x")) {
isvalid = true;
}
}
if(!isvalid) {
double s = daan.nextDouble();
score+=timu.checkAnswer(s, cAnswer);
}
}
System.out.println("you got the score:"+score);
}
public double generateQuestion(){
int x = generateNumber(100);
int y = generateNumber(100);
int z = generateNumber(4);
double cAnswer = 0;
String op = "";
switch(z) {
case 0:
cAnswer = x+y;
op = "+";
break;
case 1:
cAnswer = x-y;
op = "-";
break;
case 2:
cAnswer = x*y;
op = "*";
break;
case 3:
while(y==0)
y=generateNumber(100);
cAnswer=1.0*x/y;
op="/";
break;
}
System.out.print(x + op + y + "=");
return cAnswer;
}
public int generateNumber(int a) {
Random ran = new Random();
int b = ran.nextInt(a);
return b;
}
public static int checkAnswer(double uAnswer, double cAnswer){
int score = 0;
if(cAnswer==uAnswer) {
score=10;
}
if(cAnswer!=uAnswer) {
score=-10;
}
return score;
}
}
与第一期所不同之处在于generateNumber方法用上了,这次是在构造器中加一个整数a