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View Compilation Error

0_0_39655426_13803\Main.java:7: 错误: 找不到符号
            X = sc.nextInt();
            ^
  符号:   变量 X
  位置: 类 Main
0_0_39655426_13803\Main.java:21: 错误: 二元运算符 '||' 的操作数类型错误
        if(n = 0 || n == 1)
                 ^
  第一个类型:  int
  第二个类型: boolean
0_0_39655426_13803\Main.java:21: 错误: 不兼容的类型: int无法转换为boolean
        if(n = 0 || n == 1)
             ^
3 个错误


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