Ma’lumotlar tuzilmasi va algoritmlar

public

protected

private


Misol.
class base {
int i, j;
public:
void set(int a, int b) { i=a; j=b; }
void show() { cout << i << " " << j << "\n"; }
};
class derived : public base {
int k;
public:
derived(int x) { k=x; }
void showk() { cout << k << "\n"; }
};
int main()
{
derived ob(3);
ob.set(1, 2); // asos sinf a’zosiga ruxsat ochiq
ob.show(); // asos sinf a’zosiga ruxsat ochiq
ob.showk(); // voris sinf a’zosidan foydalanish
}
class base {
int i, j;
public:
void set(int a, int b) { i=a; j=b; }
void show() { cout << i << " " << j << "\n"; }
};
class derived : public base {
int k;
public:
derived(int x) { k=x; }
void showk() { cout << k << "\n"; }
};
int main()
{
derived ob(3);
ob.set(1, 2); // asos sinf a’zosiga ruxsat ochiq
ob.show(); // asos sinf a’zosiga ruxsat ochiq
ob.showk(); // voris sinf a’zosidan foydalanish
}
class base {
int i, j;
public:
void set(int a, int b) { i=a; j=b; }
void show() { cout << i << " " << j << "\n"; }
};
class derived : public base {
int k;
public:
derived(int x) { k=x; }
void showk() { cout << k << "\n"; }
};
int main()
{
derived ob(3);
ob.set(1, 2); // asos sinf a’zosiga ruxsat ochiq
ob.show(); // asos sinf a’zosiga ruxsat ochiq
ob.showk(); // voris sinf a’zosidan foydalanish
}

Ushbu misol tahlili quyidagicha:

• 
  Ushbu misolda asos sinfdan public murojaat turi orqali voris olindi
  

class derived : public base {….}

• 
  Bunda asos sinfning barcha public a’zolari voris sinfning ham public a’zolari bo’ladi.
  
• 
  Asos sinfning barcha himoyalangan (protected) a’zolari voris sinfning protected a’zolari bo’ladi.
  
• 
  Lekin, asos sinfning private a’zolari voris sinf uchun ham, boshqa sinflar uchun ham not accessible bo’ladi ,ya’ni asos sinfning private a’zolariga to’g’ridan to’g’ri murojaat yo’q.
  
• 
  Agar voris sinf private xususiyati orqali yaratilsa, bunda asos sinfning barcha public va protected a’zolari voris sinfning private a’zolari qatoriga o’tadi.