} ;
class B:public A{
public:
void printMe() {cout <;<; "This is class B printing. "<;< - C+ + 程序设计(04737) - 专业知识收录平台"> } ;
class B:public A{
public:
void printMe() {cout <;<; "This is class B printing. "<;< - C+ + 程序设计(04737) - 专业知识收录平台">
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#include <iostream.h>
class A{
public:
virtual void printMe(){cout<<"This is class A printing. "<<endl;};
} ;
class B:public A{
public:
void printMe() {cout << "This is class B printing. "<<

高老师2年前 (2024-03-26)C+ + 程序设计(04737)11

#include <iostream.h>
class A{
public:
virtual void printMe(){cout<<"This is class A printing. "<<endl;};
} ;
class B:public A{
public:
void printMe() {cout << "This is class B printing. "<<endl;}
} ;
class C:public B{
public:
void printMe() {cout <<"This is class C printing. "<<endl;}
} ;
void print(A a)
{
a.printMe();
}
void main()
{
B b;
C c;
print(b);print(c);
}

THIS IS CLASS A PRINTING.
THIS IS CLASS A PRINTING.

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