c++实验报告四(类的组合和继承)

1、太原工业学院计算机工程系实验报告课程名称C+程序设计A2班级1820544实验日期2019.05.06姓名王锐学号182054424实验成绩实验名称实验四类的组合和继承实验目的1、掌握类与类之间的两种关系：hasa和isa”及其实现。2、理解继承的含义，掌握派生类的定义方法和实现。实验环境VS2010实验内容.类的组合编写程序输出学生的基本信息。要求：(1)定义专业类Specialty,使其包含两个私有数据成员：专业名字sname和学分score。定义并实现该类的带参数的构造函数以及公有成员函(显示专业姓名和学分的函数showSp)；(2)定义学生类Student,使其包含三个私有数据成员：名

2、字name、年龄age、专业sp,定义并实现该类的构造函数以及公有成员函数(显示姓名、年龄和专业的函数showStu)；(3)在main函数中对上述设计进行测试。.继承编写程序计算出球、圆柱和圆锥的表面积和体积。要求：(1)定义一个基类圆，至少含有一个数据成员：半径；(2)定义基类的派生类：球、圆柱、圆锥，都含有求表面积和体积的成员函数和输出函数；(3)定义主函数，求球、圆柱、圆锥的和体积。项目一：/main.cpp#include#include#include“Student.husingnamespacestd;intmain()Studentstu(小？明，18,计?算?机竹科?学与？

3、技?术？，50);stu.showStu();return0;/Specialty#includeusingnamespacestd;实classSpecialty验public:步Specialty(stringsnam,floatscor);Specialty();骤voidshowSp();private:及stringsname;floatscore;结;果/Specialty.cpp#include#include#include“Specialty/”usingnamespacestd;Specialty:Specialty(stringsnam,floatscor)sname=s

4、nam;score=scor;Specialty:Specialty()voidSpecialty:showSp()cout”专业名字：“snameendl”专业学分：scoreendl;/Student.h#include#include“Specialty/”usingnamespacestd;classStudentpublic:Student(stringn,inta,stringnam,floatscor):sp(nam,scor)name二n;age=a;Student();voidshowStu();private:stringname;intage;Specialtysp;/S

5、tudent.cpp#include#include#includeStudent.husingnamespacestd;Student:Student()voidStudent:showStu()cout姓名：nameendl年龄：ageendl;sp.showSp();运行结果:算续计50继明.；键小至大鲁:.拿任业按项目二：/main.cpp#include#includeSphere.h#includeCylinder.h#includeCone.husingnamespacestd;intmain()Spheresp(5);Cylindercy(5,5);Coneco(3,2);sp

6、.s_show();cy.cy_show();co.co_show();return0;/Circular.h#pragmaonceconstdoublePI=3.14;classCircularpublic:Circular(doublerad):r(rad);protected:doubler;/Sphere.h#includeCircular.hclassSphere:publicCircularpublic:Sphere(doublerad):Circular(rad);public:doubles_surfaceArea();doublesvoiume();voids_show();

7、；/Sphere.cpp#include#include“Sphere.husingnamespacestd;doubleSphere:s_surfaceArea()return(4*PI*r*r);doubleSphere:s_voiume()return(4/3*PI*r*r*r);voidSphere:s_show()体积为:cout球的表面积为：“s_surfaceArea()s_voiume()endl;体积为:/Cylinder.h#include“Circular.hclassCylinder:publicCircularpublic:Cylinder(doublerad,dou

8、bleh):Circular(rad)cy_h=h;doublecy_surfaceArea();doublecy_voiume();voidcy_show();private:doublecy_h;/Cylinder.cpp#include#includeCylinder.husingnamespacestd;doubleCylinder:cysurfaceArea()return(2*PI*r*r+2*PI*r*cy_h);doubleCylinder:cy_voiume()return(PI*r*r*cy_h);voidCylinder:cy_show()体积为:cout“圆柱的表面积为

9、：“cy_surfaceArea()cy_voiume()endl;体积为:/Cone.h#include#include“Circular.husingnamespacestd;classCone:publicCircularpublic:Cone(doublel,doublerad):Circular(rad)co_l=l;doubleco_surfaceArea();doubleco_voiume();voidco_show();private:doubleco_l;/Cone.cpp#include#includeCone.husingnamespacestd;doubleCone:co_surfaceArea()return(PI*r*co_l+PI*r*r);doubleCone:co_voiume()vo运return(PI*r*r*sqrt(