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More than 1 address for derived class object?2
我有这段代码:
我有这段代码:
#include <iostream> class A { public: A() : m_i(0) { } protected: int m_i; }; class B { public: B() : m_d(0.0) { } protected: double m_d; }; class C : public A,public B { public: C() : m_c('a') { } private: char m_c; }; int main() { C d; A *b1 = &d; B *b2 = &d; std::cout << (long)b1 << std::endl <<(long)b2<< std::endl; }
当编译并运行它时,会产生以下输出:
140734705182320 140734705182328
为什么不同的指向同一个地址(& d)的指针有不同的值.
提前致谢.