28
elementi static deb e’lon qilinganidan so’ng, u umumiy (global) o’zgaruvchi sifatida
e’lon qilinishi zarur.
#include
//strcpy() uchun
#include
//printf() uchun
#include
//_getch() uchun
using
namespace
std;
class
book_series
{
public
:
book_series(
char
*,
char
*,
float
);
void
show_book(
void
);
void
set_pages(
int
);
private
:
static
int
page_count;
//bu umumiy element hisoblanadi
char
title[64];
char
author[64];
float
price;
};
int
book_series
::page_count;
//sinfdan tashqarida umumiy o`zgaruvchini e`lon qilish
void
book_series
::set_pages(
int
pages
)
{
page_count =
pages
;
}
book_series
::book_series(
char
*
title
,
char
*
author
,
float
price
)
//Sinfning konstruktori
{
strcpy(
book_series
::title,
title
);
/*string sinfiga ulanish uchun zarur bo`lgan, strcpy()
funksiyasi*/
strcpy(
book_series
::author,
author
);
book_series
::price =
price
;
}
void
book_series
:: show_book (
void
)
29
{
printf(
"Sarlavha: %s\n"
,title);
printf(
"Muallif:%s\n"
,author);
printf(
"Narx: %.2f\n"
,price);
printf(
"Sahifalar: %d\n"
,page_count);
}
void
main()
{
book_series
programming(
"Studiing C++"
,
"Author1"
, 22.95);
//programming obyektini konstruktor yordamida yaratish
book_series
word(
"Studiing to work with Word for Windows 7"
,
"Author2"
, 19.95);
//word obyektini konstruktor
yordamida yaratish
word.set_pages(256);
/*Word obyektining sahifalari soni beriladi, bu
programmingga ham ta'sir qiladi*/
programming.show_book ();
word.show_book() ;
programming.set_pages(512);
//page_countni o`zgartirish
programming.show_book();
//obyekt ma`lumotlarini ekranga
chiqarish
//programming
word.show_book();
//obyekt ma`lumotlarini ekranga chiqarish
//word
_getch();
}
