【任务2】定义一个名为CPerson的类,有以下私有成员:姓名、身份证号、性别和年龄,成员函数:构造函数、析构函数、输出信息的函数。
并在此基础上派生出CEmployee类,派生类CEmployee增加了两个新的数据成员,分别用于表示部门和薪水。
要求派生类CEmployee的构造函数显示调用基类CPerson的构造函数,并为派生类CEmployee定义析构函数,定义输出信息的函数。
#include <iostream>
#include <string.h>
#include <iomanip>//setw:设置输出数据的宽度,使用时应#include <iomanip.h>
using namespace std;
class CPerson
{
protected:
char *m_szName;
char *m_szId;
int m_nSex;//0:women,1:man
int m_nAge;
public:
CPerson(char *name,char *id,int sex,int age);
void Show1()
{
cout << setiosflags(ios::left);
cout << setw(15) << "name:" << setw(15) << m_szName << endl <<setw(15 )<<"ID:"<<setw(15)<<m_szId<<endl<<setw(15)<<"sex:"<<setw(15)<<m_nSex<<endl<<setw(15)<<"age:"<<setw(15)<<m_nAge<<endl;
}
//需要释放建立对象时动态分配的内存
};
CPerson::CPerson(char *name,char *id,int sex,int age):m_szName(name), m_szId(id), m_nSex(sex), m_nAge(age){}
class CEmployee:public CPerson
{
private:
char *m_szDepartment;
float m_Salary;
public:
CEmployee::CEmployee(char *name,char *id,int sex,int age,char *department,float salary):CPerson(name, id, sex, age)
{
m_szDepartment = department;
m_Salary = salary;
}
void Show2()
{
Show1();
cout << setiosflags(ios::left);
cout<<setw(15)<<"department:"<<setw(15)<<m_szDepartment<<endl<<setw(15)<<"Salary:"<<setw(15)<<m_Salary<<endl;
}
};
int main()
{
char name[10],id[19],department[10];
int sex,age;
float salary;
cout << "input employee's name,id,sex(0:women,1:man),age,department,salary:\n";
cin >> name >> id >> sex >> age >> department >> salary;
cout << endl ;
CEmployee employee1(name,id,sex,age,department,salary);
employee1.Show2();
system("pause");
return 0;
}
2
总结:继承与派生节省了软件开发过程中的人力,物力和时间,大大的提高了效率。