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最新推荐文章于 2022-03-16 08:44:09 发布

原创最新推荐文章于 2022-03-16 08:44:09 发布 · 492 阅读

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本文通过具体的C++代码示例介绍了类的定义、继承及对象实例化过程。主要展示了学生类（Student）和教师类（Teacher）的定义，其中教师类继承了学生类，并重写了部分成员函数。

#include <iostream>
#include<cstring> 
using namespace std; 
class Student 
{public: 
  Student(int,char[],char,float); 
  int get_num(){return num;} 
  char * get_name(){return name;} 
  char get_sex(){return sex;} 
  void display()    
{
cout<<"num:"<<num<<"\nname:"<<name<<"\nsex:"<<
 sex<<"\nscore:"<<score<<"\n \n";} 
 private: 
  int num; 
  char name[20]; 
  char sex; 
  float score; 
};  
Student::Student(int n,char nam[],char s,float so) 
 {num=n; 
  strcpy(name,nam); 
  sex=s; 
  score=so; 
}  
class Teacher 
 {public: 
  Teacher(){} 
  Teacher(Student&); 
   Teacher(int n,char nam[],char sex,float pay); 
   void display(); 
  private: 
   int num; 
   char name[20]; 
   char sex; 
   float pay; 
 }; 
  
Teacher::Teacher(int n,char nam[],char s,float p) 
{num=n; 
 strcpy(name,nam); 
 sex=s; 
 pay=p; 
}  
Teacher::Teacher(Student& stud) 
 {num=stud.get_num(); 
  strcpy(name,stud.get_name()); 
  sex=stud.get_sex(); 
  pay=1500;}  
void Teacher::display() 
{cout<<"num:"<<num<<"\nname:"<<name<<"\nsex:"<<sex<<"\npay:"<<pay<<"\n\n";}  
   
int main() 
{Teacher teacher1(10001,"Li",'f',1234.5),teacher2; 
 Student student1(20010,"Wang",'m',89.5); 
 cout<<"student1:"<<endl; 
 student1.display(); 
 teacher2=Teacher(student1); 
 cout<<"teacher2:"<<endl; 
 teacher2.display(); 
 return 0; 
}