有如下类定义: class Foo { public: Foo(int v) : value(v) { } // ① ~Foo() { } // ② private: Foo() { } // ③ int value = 0; // ④ }; 其中存在语法错误的行是( )。A.①B.②C.⑧D.④

有如下类定义: class Foo { public: Foo(int v) : value(v) { } // ① ~Foo() { } // ② private: Foo() { } // ③ int value = 0; // ④ }; 其中存在语法错误的行是( )。

A.①

B.②

C.⑧

D.④


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