JTF.ORG Forum
General Category => General Discussion => Topic started by: IslamIsCancer on June 24, 2008, 11:32:22 AM
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Hi folks, if anybody knows C++ you can check my code with MSVC compiler.
The += operator overloading doesn't work but the rest is kool.
One main.cpp
3 headers and 3 cpps for the implementation.
#include <iostream>
using namespace std;
#include "time.h"
#include "dvd.h"
#include "dvdchanger.h"
//---------------------------- main() ----------------------------
void main() {
cout << "---------- DVD changer ---------------- " << endl;
// handle Time
Time time1(3,40,10);
Time time2(0,19,50);
Time tx(time1);
cout << "test Time copy constr : " ; cout << tx << endl;
Time time3 ;
time3 = time1 + time2;
cout << "test Time op + : " ; cout << time3 << endl;
cout << endl;
//------------- one R/W DVDs ---------------------------
DVD empty_dvd("Empty", Time(0,0,0), "DVD RW" );
cout << "DVD RW:" << endl;
empty_dvd.show_DVD();
cout << endl;
//------------- handle 3 DVDs ---------------------------
DVD Rolling_Stones_dvd("Rolling Stones", Time(3,40,01) );
Rolling_Stones_dvd.show_DVD();
DVD Beatles_dvd("Beatles", Time(3,40,02) );
Beatles_dvd.show_DVD();
DVD Frank_Zappa("Frank Zappa", Time(2,59,59) );
Frank_Zappa.show_DVD();
//------------- handle the DVD changer ----------------
cout << endl;
DVD_changer dvd_changer;
dvd_changer.show_status();
dvd_changer += Rolling_Stones_dvd;
dvd_changer.show_status();
// put in more CDs
dvd_changer += Beatles_dvd;
dvd_changer += Frank_Zappa;
dvd_changer.show_status();
// play Frank Zappa
dvd_changer.play_dvd(2);
cout << "Done " << endl;
}
#include <iostream>
using namespace std;
#include "time.h"
#ifndef _dvd_h_
#define _dvd_h_
class DVD {
private:
char* dvd_title;
Time play_time;
char* dvd_type;
public:
DVD(char* = "no DVD", Time = Time(0,0,0), char* = "DVD-R");
//dtor
~DVD();
void show_DVD();
// add may be some functions here If possible use references !!
DVD(const DVD & original);
char*get_title();
char*get_type();
Time get_time();
};
#endif //_dvd_h_
#include <iostream>
using namespace std;
#include "dvd.h"
#include "time.h"
#include <string.h>
DVD::DVD(char* a_title, Time a_time, char* a_type )
{
//init. title
dvd_title = new char[strlen(a_title)+1];
strcpy(dvd_title, a_title);
//init. type
dvd_type = new char[strlen(a_type) +1];
strcpy(dvd_type, a_type);
//init. play_time
play_time = Time(a_time);
}
DVD::DVD(const DVD & original)
{
//title
dvd_title = new char[strlen(original.dvd_title) +1];
strcpy(dvd_title, original.dvd_title);
//type
dvd_type = new char[strlen(original.dvd_type) +1];
strcpy(dvd_type, original.dvd_type);
//time
play_time = Time(original.play_time);
}
void DVD::show_DVD()
{
cout << dvd_title << " DVD is of type " << dvd_type << ", Time ";
cout << play_time << endl;
}
DVD::~DVD()
{
if (dvd_title != NULL) delete[] dvd_title;
if (dvd_title != NULL) delete[] dvd_type;
}
char*DVD::get_title()
{
return dvd_title;
}
char*DVD::get_type()
{
return dvd_type;
}
Time DVD::get_time()
{
return play_time;
}
#ifndef _time_h_
#define _time_h_
#include <iostream>
using namespace std;
class Time {
private:
int hours, min, sec;
public:
Time();
Time(int h, int m=0, int s=0);
//additional CCTOR
Time(const Time & original);
Time operator+( Time & t);
~Time();
friend ostream & operator <<(ostream &, Time &);
// friend class DVD;
int get_hours();
int get_min();
int get_sec();
};
#endif //_time_h_
#include "time.h"
//default ctor
Time::Time()
{
hours = min = sec = 0;
}
//overloaded ctor
Time::Time(int h, int m, int s)
{
hours = h; min = m; sec = s;
}
//copy ctor
Time::Time(const Time & original)
{
hours = original.hours;
min = original.min;
sec = original.sec;
}
//overloading + operator
Time Time::operator+( Time & t )
{
Time time_sum;
time_sum.sec = (hours * 3600 + min * 60 + sec)
+ (t.hours * 3600 + t.min * 60 + t.sec);
time_sum.min = time_sum.sec / 60;
time_sum.hours = time_sum.min / 60;
time_sum.min = time_sum.min % 60;
time_sum.sec = time_sum.sec % 60;
return time_sum;
}
//dtor
Time::~Time()
{
//new is not used, there's nothing to delete
}
ostream & operator<<(ostream & os, Time & tm)
{
os<< tm.hours << " : " << tm.min << " : " << tm.sec <<endl;
return os;
}
int Time::get_hours()
{
return hours;
}
int Time::get_min()
{
return min;
}
int Time::get_sec()
{
return sec;
}
#include <iostream>
using namespace std;
#include "time.h"
#include "dvd.h"
#ifndef _dvdchanger_h_
#define _dvdchanger_h_
class DVD_changer {
private:
DVD **pDVD;
int current_number_of_DVDs;
Time total_play_time;
public:
DVD_changer();
~DVD_changer();
void show_status() ;
void operator+=(DVD &);
void play_dvd(int i);
};
#endif //_dvdchanger_h_
#include "dvdchanger.h"
#include "dvd.h"
#include "time.h"
DVD_changer::DVD_changer()
{
pDVD = NULL;
current_number_of_DVDs = 0;
total_play_time = Time(0,0,0);
}
DVD_changer::~DVD_changer()
{
}
void DVD_changer::show_status()
{
cout << "DVD changer contains " << current_number_of_DVDs << " DVDs, total play time is ";
cout << total_play_time << endl;
}
void DVD_changer::operator+=(DVD & a_dvd)
{
current_number_of_DVDs++;
// total_play_time = total_play_time + a_dvd.get_time;
DVD**placeholder;
placeholder = pDVD;
if (pDVD != 0) delete pDVD;
current_number_of_DVDs++;
pDVD = new DVD*[current_number_of_DVDs + 1];
memcpy(pDVD, placeholder, current_number_of_DVDs-1);
pDVD[current_number_of_DVDs] = &a_dvd;
}
void DVD_changer::play_dvd(int i)
{
cout << "playing..., " << pDVD->get_title << " DVD is of type " << pDVD->get_type << ", Time ";
cout << pDVD->get_time;
}
/*
DVD_changer::~DVD_changer()
{
}*/
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I have no idea but congratulations O0 O0 O0 O0
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Congrats ISC! O0
...can you briefly describe you achievement?
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Congratulations IslamisCancer. I wish for you only the best O0
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Does it solve the energy crisis in the world?
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Thanks mord, Dan, pheasant =)
Dan, Time class shows you the time hours mins and seconds.
You can add times like 2 hours 40 mins + 1 hour 30 mins,
it won't be 3 hours and 70 mins but 4 hours and 10 mins.
So this is needed for our DVD changer.
Basically this is supposed to be a quasi DVD player lol :)
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ah fantastic! Congrats!
Im getting into C# myself
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Congrats IslamIsCancer O0 O0
(http://www.freejigsawpuzzles.com/images/CONGRATULATIONS.jpg)
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Very cool!
I'm actually learning Java, myself.
Eventually I plan on learning C++... good stuff! O0