[c++]基类对象作为函数参数（赋值兼容规则）

标签：c++   继承   赋值兼容   

编程处理教师的基本情况。要求：

1、定义一个“person”类，用来存储及处理人的姓名、性别、年龄，成员函数自定；

2、定义“teacher”类，公有继承“person”类用来存储教师所在学院、所学专业、学历、学位、职称、教龄等，成员函数自定。

3、处理程序，主要包括：

⑴显示姓名、性别、年龄函数：既能显示person对象的姓名、性别、年龄，又能显示teacher对象的姓名、性别、年龄（用person引用对象为形参）；

⑵显示教师所在学院、所学专业、学历、学位、职称、教龄的函数；

⑶ main()函数：分别定义persor对象及teacher对象，并输入不同对象相关值，调用成员函数设置对象的值，调用显示函数显示相应值。

#ifndef __person__person__
#define __person__person__
#include<iostream>
using namespace std;
#include<string.h>
class person
{
protected:
    char *name;
    char *sex;
    int age;
public:
    person(char *na,char *se,int ag);
    void set_person(char *na,char *se,int ag);
    char* get_name()
    {return name;}
    char* get_sex()
    {return sex;}
    int get_age()
    {return age;}
    void print();
    ~person()
    {delete []name;delete []sex;}

};

person::person(char *na,char *se,int ag)
{

    name=new char[strlen(na)+1];
    strcpy(name,na);
    sex=new char[strlen(se)+1];
    strcpy(sex,se);
    age = 0;
}

void person:: set_person(char *na,char *se,int ag)
{
    name=new char[strlen(na)+1];
    strcpy(name,na);
    sex=new char[strlen(se)+1];
    strcpy(sex,se);
    age=ag;
}

void person:: print()
{
    for(int i = 0;i<=strlen(name);i++)
    {
        cout<<name[i];
    }
    cout<<endl;
    for(int i = 0;i<=strlen(sex);i++)
    {
        cout<<sex[i];
    }
    cout<<endl;
    cout<<"age:"<<age<<endl;
    cout<<endl;

}

#endif /* defined(__person__person__) */

#ifndef person_teacher_h
#define person_teacher_h

#include"person.h"
class teacher:public person
{
protected:
    char *college;//学院
    char *speciality;//专业
    char *school;//学历
    char *degree;//学位
    char *title;//职称
    int teacherage;//教龄
public:
    teacher(char *na,char* se,int ag,char *co,char *sp,char* sc,char* de,char* ti,int te);
    void set_t(char *na,char* se,int ag,char *co,char *sp,char* sc,char* de,char* ti,int te);
    char* get_college()
    {return college;}
    char* get_speciality()
    {return  speciality;}
    char* get_school()
    {return  school;}
    char* get_degree()
    {return  degree;}
    char* get_title()
    {return  title;}
    int get_teacher_age()
    {return teacherage;}
    ~teacher();
    void print_t(person&p);
};


teacher::teacher(char *na,char* se,int ag,char *co,char *sp,char* sc,char* de,char* ti,int te):person(na,se,ag)
{
    //person::set_person(na, se, ag);
    college=new char[strlen(co)+1];
    strcpy(college,co);
    speciality=new char[strlen(sp)+1];
    strcpy(speciality,sp);
    school=new char[strlen(sc)+1];
    strcpy(school,sc);
    degree=new char[strlen(de)+1];
    strcpy(degree,de);
    title=new char[strlen(ti)+1];
    strcpy(title,ti);
    teacherage =0;
}

void teacher:: set_t(char *na,char* se,int ag,char *co,char *sp,char* sc,char* de,char* ti,int te)
{
    name=new char[strlen(na)+1];
    strcpy(name,na);
    sex=new char[strlen(se)+1];
    strcpy(sex,se);
    age=ag;

    college=new char[strlen(co)+1];
    strcpy(college,co);
    speciality=new char[strlen(sp)+1];
    strcpy(speciality,sp);
    school=new char[strlen(sc)+1];
    strcpy(school,sc);
    degree=new char[strlen(de)+1];
    strcpy(degree,de);
    title=new char[strlen(ti)+1];
    strcpy(title,ti);
    teacherage =te;

}
teacher::~teacher()
{

    delete []college;
    delete []speciality;
    delete []school;
    delete []degree;
    delete [] title;
}

void teacher:: print_t(person &p)
{
    p.print();
    cout<<"-------------------"<<endl;
    for(int i = 0;i<=strlen(college);i++)
    {
        cout<<college[i];
    }
    cout<<endl;
    for(int i = 0;i<=strlen(speciality);i++)
    {
        cout<<speciality[i];
    }
    cout<<endl;
    for(int i = 0;i<=strlen(school);i++)
    {
        cout<<school[i];
    }
    cout<<endl;
    for(int i = 0;i<=strlen(degree);i++)
    {
        cout<<degree[i];
    }
    cout<<endl;
    for(int i = 0;i<=strlen(title);i++)
    {
        cout<<title[i];
    }
    cout<<endl;

    cout<<teacherage<<endl;
    cout<<endl;
}
void fun(person &p)
{
    p.print();
    cout<<endl;
}

#endif

#include "teacher.h"
//#include"person.h"
int main()
{
    person p("s","nv",22);
    teacher T("张老师","女",44,"计科","网络","本科","博士","教授",20);
    T.print_t(p);
    T.set_t("张老师","女",44,"计科","网络","本科","博士","教授",20);
    T.print_t(p);
        cout<<T.get_name()<<endl;
        cout<<T.get_sex()<<endl;
        cout<<T.get_age()<<endl;
        cout<<T.get_college()<<endl;
        cout<<T.get_degree()<<endl;
        cout<<T.get_school()<<endl;
        cout<<T.get_speciality()<<endl;
        cout<<T.get_title()<<endl;
        cout<<T.get_teacher_age()<<endl;
    cout<<"--------------------"<<endl;
    fun(p);
    return 0;
}

//int main()
//{
//    person p("s","nv",22);
//    p.print();
//    p.set_person("w","female",44);
//    p.print();
//    return 0;
//}

[c++]基类对象作为函数参数（赋值兼容规则）

标签：c++   继承   赋值兼容   

原文地址：http://blog.csdn.net/cherry_ermao/article/details/46355811