C++面向对象程序设计
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53 54 55 56 57 58 59 60 61 basederived// aim base-class pointer at derived-class object and print commissionEmployeePtr commissionEmployeePtr = &basePlusCommissionEmployee; basecout << "\n\n\nCalling print with base-class pointer to " "derivedobject\ base<< "derived-class object\ninvokes base-class print " derivedobject:\ n"; << "function on that derived-class object:\n\n"; commissionEmployeePtrbasecommissionEmployeePtr->print(); // invokes base-class print yeePtr cout << endl; return 0; derivedderived// aim derived-class pointer at derived-class object and print basePlusCommissionEmployeePtr = &basePlusCommissionEmployee; // natural derivedcout << "\n\n\nCalling print with derived-class pointer to " "\nderived edderived<< "\nderived-class object invokes derived-class " function:\ n"; << "print function:\n\n"; basePlusCommissionEmployeePtrderivedbasePlusCommissionEmployeePtr->print(); // invokes derived-class print
Outline
fig13_05.cpp
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62 } // end main