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View Compilation Error

0_0_13113051_3282\Main.java:6: 不兼容的类型
找到: java.lang.String
需要: char
			char ch = input.next();
			                    ^
0_0_13113051_3282\Main.java:8: 可能损失精度
找到: int
需要: char
				ch = ch -'A' + 'a';
				             ^
2 错误


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