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时间:2020-10-23
《实验六继承与派生.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、..继承与组合一、实验目的1.了解继承在面向对象程序设计中的重要作用。2.进一步理解继承与派生的概念。3.掌握通过继承派生出一个新的类的方法。4.了解虚基类的作用和用法。5.掌握类的组合二、实验内容1.请先阅读下面的程序,写出程序运行的结果,然后再上机运行程序,验证自己分析的结果是否正确。(1)#includeusingnamespacestd;classA{public:A(){cout<<"A::A()called.";}virtual~A(){cout<<"A::~A()called."
2、;}};classB:publicA{public:B(inti){cout<<"B::B()called.";buf=newchar[i];}virtual~B(){delete[]buf;cout<<"B::~B()called.";}private:char*buf;};voidfun(A*a){cout<<"Mayyousucceed!"<3、led.B::B()called.Mayyousucceed!B::~B()called.A::~A()called.(2)#includeusingnamespacestd;classA{public:A(inta,intb):x(a),y(b){cout<<"Aconstructor..."<4、"<5、out<<"("<6、A....zyzl....(3)#includeusingnamespacestd;classA{public:A(inta):x(a){cout<<"Aconstructor..."<7、){cout<<"Bconstructor..."<8、;classD:publicC,publicvirtualA{public:D(inta,intb,intc):C(a,b,c),A(c){cout<<"Dconstructor..."<
3、led.B::B()called.Mayyousucceed!B::~B()called.A::~A()called.(2)#includeusingnamespacestd;classA{public:A(inta,intb):x(a),y(b){cout<<"Aconstructor..."<4、"<5、out<<"("<6、A....zyzl....(3)#includeusingnamespacestd;classA{public:A(inta):x(a){cout<<"Aconstructor..."<7、){cout<<"Bconstructor..."<8、;classD:publicC,publicvirtualA{public:D(inta,intb,intc):C(a,b,c),A(c){cout<<"Dconstructor..."<
4、"<5、out<<"("<6、A....zyzl....(3)#includeusingnamespacestd;classA{public:A(inta):x(a){cout<<"Aconstructor..."<7、){cout<<"Bconstructor..."<8、;classD:publicC,publicvirtualA{public:D(inta,intb,intc):C(a,b,c),A(c){cout<<"Dconstructor..."<
5、out<<"("<
6、A....zyzl....(3)#includeusingnamespacestd;classA{public:A(inta):x(a){cout<<"Aconstructor..."<7、){cout<<"Bconstructor..."<8、;classD:publicC,publicvirtualA{public:D(inta,intb,intc):C(a,b,c),A(c){cout<<"Dconstructor..."<
7、){cout<<"Bconstructor..."<8、;classD:publicC,publicvirtualA{public:D(inta,intb,intc):C(a,b,c),A(c){cout<<"Dconstructor..."<
8、;classD:publicC,publicvirtualA{public:D(inta,intb,intc):C(a,b,c),A(c){cout<<"Dconstructor..."<
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