第11周 项目二-职员有薪水了（2）

（2）字符串除了用C++扩充的string类型外，按C语言的传统，还可以用char *表示。请将类声明中的string全部改为char *后，重新写一遍程序（此时的区别是，类中有指针成员，构造和析构函数需要考虑深复制的问题了。）

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();    ~CPerson();};class CEmployee:public CPerson{private:    char *m_szDepartment;    float m_Salary;public:    CEmployee(char *name,char *id,int sex,int age,char *department,float salary);    void Show2();    ~CEmployee();};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;    CEmployee employee1(name,id,sex,age,department,salary);    employee1.Show2();    return 0;}

代码：

#include <iostream>#include <cstring>#include <iomanip>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();    ~CPerson();};class CEmployee:public CPerson{private:    char *m_szDepartment;    double m_Salary;public:    CEmployee(char *name,char *id,int sex,int age,char *department,double salary);    void Show2();};CPerson::CPerson(char *name,char *id,int sex,int age){    m_szName=new char[strlen(name)+1];    strcpy(m_szName,name);    m_szId=new char[strlen(id)+1];    strcpy(m_szId,id);    m_nSex=sex;    m_nAge=age;}void CPerson::Show1(){    cout<<setw(5)<<m_szName<<setw(18)<<m_szId;    if(m_nSex==0)        cout<<setw(7)<<"women";    else cout<<setw(7)<<"man";    cout<<setw(8)<<m_nAge;}CPerson::~CPerson() {}CEmployee::CEmployee(char *name,char *id,int sex,int age,char *department,double salary):CPerson(name,id,sex,age){    m_szDepartment=new char[strlen(department)+1];    strcpy(m_szDepartment,department);    m_Salary=salary;}void CEmployee::Show2(){    cout<<setw(5)<<"name"<<setw(18)<<"id"<<setw(7)<<"sex"<<setw(8)<<"age"<<setw(12)<<"department"<<setw(10)<<"salary"<<endl;    Show1();    cout<<setw(12)<<m_szDepartment<<setw(10)<<m_Salary;}int main(){    char name[10],id[19],department[10];    int sex,age;    double salary;    cout<<"input employee's name,id,sex(0:women,1:man),age,department,salary:\n";    cin>>name>>id>>sex>>age>>department>>salary;    CEmployee employee1(name,id,sex,age,department,salary);    employee1.Show2();    return 0;}

运行结果：

知识点总结：

char指针