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嗨，我正在尝试制作一个问题游戏来尝试我的知识和能力，无论如何我正在尝试使用整数作为积分，并且用户回答的每个问题都会获得特殊数量的积分，无论如何我试图这样做

      switch (Ques){ case 1 : //first question about India and where it is in the map
          System.out.println("in what continent India is?");
          Scanner IndiaAns = new Scanner(System.in); //Scanner to receive user answer
          String IndiaAns2 , IndiaAnswer ; //strings to be used to receive user input and matching with the correct ones
          IndiaAns2 = IndiaAns.nextLine(); //Scanner will work here and receive...
          IndiaAnswer = "asia"; //the correct answer here and will be matched with user ones
          if (IndiaAns2 == IndiaAnswer) 
          {int Twopoints = 2; Points = + Twopoints; } else{}

          case 2:
          System.out.println("the Appstore founds in any phone model?");
          Scanner Appstore =new Scanner(System.in);
          String AppstoreAns1 ,AppstoreAns2; //strings saving 
          AppstoreAns1 = Appstore.nextLine(); //Scanner
          AppstoreAns2 = "iphone"; //matching with user answer
          if (AppstoreAns1 == AppstoreAns2)
          { int Threepoints = 3; Points = +Threepoints;} else { Points = +0;}

..还有另外两种情况，点整数不在代码示例区域中，如果完整代码是必要的，我会把它放在上面

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1 回答 1

1

关于你的代码，

  if (IndiaAns2 == IndiaAnswer) 
          {int Twopoints = 2; Points = + Twopoints; } else{}

应该是这样的

 if(indiaAns2.equals(indiaAnswer)){
  points += QUESTION_1_POINTS;
 }

whereQUESTION_1_POINTS 被定义为常量，如 `

public static final int  QUESTION_1_POINTS =2;

在那里你分配给points变量 , points + QUESTION_1_POINTS。

points += someInteger   --> points = points + someInteger

一些建议，

1）遵循Java代码约定，变量名以小写开头

2）对于对象比较总是使用equals()而不是== 示例：

改变

if (IndiaAns2 == IndiaAnswer)

至：

if (indiaAns2.equals(indiaAnswer))

3）你需要做switch语句

switch(condition){
case 1:
//code
break;
case 2:
//code 
break;
default:// some code;
}
于 2013-08-16T16:27:31.060 回答