Question

import java.util.Random;

public class knife {

    static Random randGen = new Random();
    public static void main(String[] args) {

            int kniferpd = 1;
            int knifebullet = 0;

            int charstrength = 10;
            int charlightcc = 10;

            int hit = randGen.nextInt(10) + 1 + charlightcc;
            int crit = randGen.nextInt(100) + 1 + charlightcc;
            int knifedmg = randGen.nextInt(5) + 6;

            if (hit < 10) 
            System.out.println("You missed!");
            else if (hit > 10 && crit > 98);
            System.out.println("Critical strike of " + knifedmg * 2 + "dmg.");
            else if (hit > 10 && crit < 98);
            System.out.println("Strike of " + knifedmg + "dmg.");

            {

    }
}
}

当我写这段代码时，我得到下面所述的错误，我不知道什么是错的！这是我的错误，他们在底部的“其他如果”中表示。

令牌“else”上的语法错误，而预期

Answer 1

删除if语句后的;

这样做

if (hit < 10) 
     System.out.println("You missed!");
else if (hit > 10 && crit > 98)
    System.out.println("Critical strike of " + knifedmg * 2 + "dmg.");
else if (hit > 10 && crit < 98)
    System.out.println("Strike of " + knifedmg + "dmg.");

或

if (hit < 10) {
     System.out.println("You missed!");
}
else if (hit > 10 && crit > 98) {
    System.out.println("Critical strike of " + knifedmg * 2 + "dmg.");
}
else if (hit > 10 && crit < 98) {
    System.out.println("Strike of " + knifedmg + "dmg.");
}

Answer 2

使用;

从行尾删除if

Answer 3

只是一个小错误......

        if (hit < 10) 
             System.out.println("You missed!");
        else if (hit > 10 && crit > 98);  // <-- No ; here
             System.out.println("Critical strike of " + knifedmg * 2 + "dmg.");
        else if (hit > 10 && crit < 98); // <-- No ; here
             System.out.println("Strike of " + knifedmg + "dmg.");

为了您的理解，您所写的内容将被解释为：

if (hit < 10) {
     System.out.println("You missed!");
} else if (hit > 10 && crit > 98) {
     ; // same as do nothing
}

System.out.println("Critical strike of " + knifedmg * 2 + "dmg.");

else if (hit > 10 && crit < 98){ // compiler error
     ; // same as do nothing
}

System.out.println("Strike of " + knifedmg + "dmg.");

Answer 4

这就是为什么即使你不严格需要if语句也要使用{}几乎总是更好的原因。如果你添加{}它显然正在发生什么......

如果我们将您的代码重新格式化为：

import java.util.Random;

public class knife {

    static Random randGen = new Random();
    public static void main(String[] args) {

            int kniferpd = 1;
            int knifebullet = 0;

            int charstrength = 10;
            int charlightcc = 10;

            int hit = randGen.nextInt(10) + 1 + charlightcc;
            int crit = randGen.nextInt(100) + 1 + charlightcc;
            int knifedmg = randGen.nextInt(5) + 6;

            if (hit < 10) {
                System.out.println("You missed!");
            } else if (hit > 10 && crit > 98);

            System.out.println("Critical strike of " + knifedmg * 2 + "dmg.");

            else if (hit > 10 && crit < 98); // this doesn't make sense

            System.out.println("Strike of " + knifedmg + "dmg.");

            {

    }
}
}

正确格式化并带有更正

import java.util.Random;

public class knife {

    static Random randGen = new Random();
    public static void main(String[] args) {

            int kniferpd = 1;
            int knifebullet = 0;

            int charstrength = 10;
            int charlightcc = 10;

            int hit = randGen.nextInt(10) + 1 + charlightcc;
            int crit = randGen.nextInt(100) + 1 + charlightcc;
            int knifedmg = randGen.nextInt(5) + 6;

            if (hit < 10) {
                System.out.println("You missed!");
            } else if (hit > 10 && crit > 98) {            
                System.out.println("Critical strike of " + knifedmg * 2 + "dmg.");
            } else if (hit > 10 && crit < 98) {                
                System.out.println("Strike of " + knifedmg + "dmg.");
            }

    }
}

我的“else if”命令无效。

4 个答案: