Deriving the point3d class from the point2d class - C++ Class

C++ examples for Class:Inheritance

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Description

Deriving the point3d class from the point2d class

Demo Code

#include <cstdlib> 
 #include <iostream> 

 using namespace std; 

 class point2d /* w ww . j  av  a2 s.co m*/
 { 
 public : 
     point2d(); 
     point2d(int xValue,int yValue); 

     void X(int xValue); 
     int X(void); 
     void Y(int yValue); 
     int Y(void); 

 private: 
     int x ,y ; 
 }; 


 inline point2d ::point2d() 
 { 
     x = y = 0; 
 } 


 inline point2d ::point2d(int xValue,int yValue) 
 { 
     x = xValue; 
     y = yValue; 
 } 

 inline void point2d ::X(int xValue) 
 { 
     x = xValue; 
 } 

 inline int point2d ::X(void) 
{ 
     return (x ); 
} 

inline void point2d ::Y(int yValue) 
{ 
    y = yValue; 
} 

inline int point2d ::Y(void) 
{ 
    return (y ); 
} 


class point3d : public point2d 
{ 
public : 
    point3d(); 
    point3d(int xValue,int yValue,int zValue); 

    void Z(int zValue); 
    int Z(void); 
private: 
    int z; 
}; 

inline point3d ::point3d() : point2d() 
{ 
    z = 0; 
} 


inline point3d ::point3d( 
    int xValue, 
    int yValue, 
    int zValue) : point2d(xValue,yValue) 
{ 
    z = zValue; 
} 

inline void point3d ::Z(int zValue) 
{ 
    z = zValue; 
} 

inline int point3d ::Z(void) 
{ 
    return (z); 
} 


int main(int argc, char *argv []) 
{ 
    point3d rightHere(40,50,60); 

    cout << "(x , y , z)=(" << rightHere.X(); 
    cout << "," << rightHere.Y(); 
    cout << "," << rightHere.Z() << ")"; 
    cout << endl; 

     rightHere.X(10); 
     rightHere.Y(20); 
     rightHere.Z(30); 
 
     cout << "(x , y , z)=(" << rightHere.X(); 
     cout << "," << rightHere.Y(); 
     cout << "," << rightHere.Z() << ")"; 
     cout << endl; 
 
     rightHere.X(30); 
     rightHere.Y(20); 
     rightHere.Z(10); 
 
     cout << "(x , y , z)=(" << rightHere.X(); 
     cout << "," << rightHere.Y(); 
     cout << "," << rightHere.Z() << ")"; 
     cout << endl; 
 
   
     return (0); 
  }

Result


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