恶魔城の真空刃

摘要： 1. 向上强制类型转换： 1 class A 2 { 3 }; 4 5 class B 6 { 7 }; 8 9 class Derived : public A, protected B10 {11 };12 13 void fun(Derived * pDerived)14 {15 A * p1 = pDerived; // ok16 A * p2 = dynamic_cast<A *>(pDerived); // ok17 B * p3 = pDerived; // error: 基类B是protected继承的基类18 B * p4 = dynami... 阅读全文