void jewel
How do you write the specialized constructor for this class?
{
public:
// add methods
//Car();
//Car(const char *_pName, int a, int b);
//Car(const Car & r);
//Car &operator=(const Car &) ;
//~Car();
// do not add data
Car *pNext;
Car *pPrev;
const char *pName;
int a;
int b;
};```
harsh bloomBOT
little helm
Show us what you've tried
void jewel
:a(a), b(b), pNext(nullptr), pPrev(nullptr), pName(_pName)
{
}```this is main: Car *pA = new Car("A",11,14); Car *pB = new Car("B",12,15); Car *pC = new Car("C",13,16); but when i try to call it it says: 'pA': local variable is initialized but not referenced
austere atlas
this is main: ```Car *pA = new Car("A",11,14);
Car *pB = new Car("B",12,15);
Car...
That's just a warning saying you made something but never used it
Btw, why are you using new?
void jewel
yes im using new
austere atlas
Why
void jewel
this is for an assignment and im having problems with my constructor i dont know how to implement the constructors when it calls new
void jewel
well we arent supposed to modify the main we were supposed to do a deep copy
and im having trouble for that too i dont know where to start
austere atlas
I presume you're just meant to deep copy some list, not that the copy constructor is meant to be deep?
void jewel
ahh yes i wasnt meant to deep copy this thank you
:pName(nullptr), a(0), b(0), pNext(nullptr), pPrev(nullptr)
{
}
Car::Car(const char* _pName, int a, int b)
:a(a), b(b), pNext(nullptr), pPrev(nullptr),pName(_pName)
{
}
Car::Car(const Car& r)
:a(r.a), b(r.b), pNext(nullptr), pPrev(nullptr), pName(r.pName)
{
}
Car& Car::operator=(const Car& r)
{
a = r.a;
b = r.b;
pName = r.pName;
return *this;
}
Car::~Car()
{
}```this is my constructors and when i calll main ```Car *pA = new Car("A",11,14);
Car *pB = new Car("B",12,15);
Car *pC = new Car("C",13,16);
i tried delete [ ] pName but it does not work
austere atlas
You need delete pA to delete the first car, for example
void jewel
i see, is there a way i can do this in the destructor?
austere atlas
No. The destructor runs after delete (or scope exit)
harsh bloomBOT
@void jewel Has your question been resolved? If so, type !solved :)
void jewel
!solved