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View Compilation Error

0_0_20872889_2412\Main.java:4: 错误: 需要<标识符>
		System.out.println("please input A:");
		                  ^
0_0_20872889_2412\Main.java:4: 错误: 非法的类型开始
		System.out.println("please input A:");
		                   ^
0_0_20872889_2412\Main.java:6: 错误: 需要<标识符>
		a = sc.nextInt();
		 ^
0_0_20872889_2412\Main.java:7: 错误: 需要<标识符>
		System.out.println("please input B:");
		                  ^
0_0_20872889_2412\Main.java:7: 错误: 非法的类型开始
		System.out.println("please input B:");
		                   ^
0_0_20872889_2412\Main.java:8: 错误: 需要<标识符>
		b = sc.nextInt();
		 ^
0_0_20872889_2412\Main.java:9: 错误: 需要<标识符>
		sum = a + b;
		   ^
0_0_20872889_2412\Main.java:10: 错误: 需要<标识符>
		System.out.println(sum);
		                  ^
0_0_20872889_2412\Main.java:10: 错误: 需要<标识符>
		System.out.println(sum);
		                      ^
9 个错误


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