c++ new关键字的用法

c++new关键字的用法有

1、创建类对象

2、隐藏继承于基类的继承成员

#include <stdio.h>

class Test

{

public:

    virtual void print(){printf("Base Test print\n");}

};

class ClassOne:public Test

{

public:

    void print(){printf("ClassOne print\n");}

};

class ClassTwo:public Test

{

public:

    void print(){printf("ClassTwo print\n");}

};

int main()

{

    ClassOne *clsOne = new ClassOne();  // create object

    ClassTwo *clsTwo = new ClassTwo();

    clsOne->print();

    clsTwo->print();

    Test *ts = new ClassOne();  // hide base member function

    ts->print();

    delete clsOne;

    delete clsTwo;

    delete ts;

    return 0;

}

ClassOne print

ClassTwo print

ClassOne print