error: cannot convert ‘DerivedClass*‘ to ‘BaseClass*‘ in initialization（不能转换*到*在初始化)
#includeusing namespace std;class BaseClass{public:BaseClass(){cout<<“BaseClass constructor “<<endl;}void fn1(){cout<<“Base1”<<endl;}void fn2(){cout<<“Base2”<<endl;}~BaseClass(){cout<<“BaseClass destructor”
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2020-12-13 21:36:45 ·
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