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View Compilation Error

0_0_21941647_7187\Main.java:3: 错误: 类Sum是公共的, 应在名为 Sum.java 的文件中声明
public class Sum
       ^
0_0_21941647_7187\Main.java:7: 错误: 不兼容的类型: int无法转换为boolean
        while(1)
              ^
0_0_21941647_7187\Main.java:9: 错误: 找不到符号
            int n = cin.nextInt(); 
                    ^
  符号:   变量 cin
  位置: 类 Sum
0_0_21941647_7187\Main.java:10: 错误: 找不到符号
            int m = cin.nextInt();
                    ^
  符号:   变量 cin
  位置: 类 Sum
4 个错误


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