subclass

This is a discussion on subclass within the C++ Programming forums, part of the General Programming Boards category; Code: #ifndef __cDATE_H #define __cDATE_H #include <iostream.h> #include <string.h> class cSTRING { protected: int _nCmpValue, _num1, _num2; char *pszName1, *pszName2; ...

  1. #1
    eat my shorts!
    Join Date
    Apr 2002
    Posts
    294

    subclass

    Code:
    #ifndef __cDATE_H
    #define __cDATE_H
    
    #include <iostream.h>
    #include <string.h>
    
    class cSTRING 
    {
    	protected:
    		int _nCmpValue, _num1, _num2;
    		char *pszName1, *pszName2;
    	public:
    		cSTRING();
    		
    		cSTRING(char *pname, int returnVal);
    
    		cSTRING(char *pszStr1);
    		cSTRING(cSTRING &rhs);			
    				
    		~cSTRING();
    
    		char *getName1()
    		{
    			return this->pszName1;
    		}
    		
    		char *getName2()
    		{
    			return this->pszName2;
    		}
    
    
    		void print()
    	    {
    		    cout << pszName1 << endl;
    	    }
    
    		cSTRING& operator=(const cSTRING& cStr);
    		cSTRING operator+(const cSTRING& cStr);
    		cSTRING& operator+=(const cSTRING& cStr);
    		int operator==(const cSTRING& cStr);
    		int operator!=(const cSTRING& cStr);
    		cSTRING& Reverse();
    		
    		friend ostream &operator<<(ostream &os, cSTRING& cStr);
    		friend istream &operator>>(istream& is, cSTRING& cStr);
    		int palindrome(const cSTRING& cStr);	
    };
    class cFILENAME:public cSTRING
    {
    	protected:
    		char *pszFName1;
    		char *pszFName2;
    	public:
    		cFILENAME();
    		cFILENAME(char *pszStr1);
    		cFILENAME(cFILENAME &rhs);
    		~cFILENAME();
    	
    	//cFILENAME(cSTRING& s):cSTRING(s){}
    
    	const char* getExtension() const;
    	cFILENAME& toUpper();
    	cFILENAME& toLower();
    
    	char *getFName1()
    	{
    		return this->pszFName1;
    	}
    	char *getFName2()
    	{
    		return this->pszFName2;
    	}
    
    };
    #endif
    i havent done this before, but how would i make a CSTRING of a filename? i am looking @ about.com tutorial, but is very confusing.
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  2. #2
    Code Goddess Prelude's Avatar
    Join Date
    Sep 2001
    Posts
    9,796
    >class cFILENAMEublic cSTRING
    What good is inheritance here? Containment would be much better as you don't use anything that requires internal knowledge of cSTRING, and a filename is only represented by a string, it isn't a string in and of itself logically:
    Code:
    class cFILENAME
    {
      cSTRING FName;
    public:
      cFILENAME();
      cFILENAME(char *pszStr1)
        : FName(pszStr1)
      {}
      cFILENAME(cSTRING &rhs)
        : FName(rhs)
      {}
      // No destructor needed
    
      const char* getExtension() const;
      cFILENAME& toUpper();
      cFILENAME& toLower();
    
      char *getFName1()
      {
        return FName.getName1();
      }
      char *getFName2()
      {
        return FName.getName2();
      }
    };
    My best code is written with the delete key.

  3. #3
    eat my shorts!
    Join Date
    Apr 2002
    Posts
    294
    lol dont tell me tell te stupid teachers
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  4. #4
    Code Goddess Prelude's Avatar
    Join Date
    Sep 2001
    Posts
    9,796
    >lol dont tell me tell te stupid teachers
    The next time you see your teachers, give them a good hard slap and say it's from Julienne Guth.
    My best code is written with the delete key.

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