class with enum and constructor

Hey guys:D
I really confused with constructor
(default constructor and constructor with parameters)

I coded this problem
Attachment 12765

and I worked almost, but I stock in constructor

Code:

---

class Tier
{
public:
enum TIER_MAKE
{
nexen,
kankook,
kumho
};
private:
TIER_MAKE make;
public: .
Tier(TIER_MAKE p_make) :make( p_make ) {}
void print( void )
{
switch ( make )
{
case nexen:
{
cout << "nexen" << endl;
}
break;
case kankook:
{
cout << "kankook" << endl;
}
break;
case kumho:
{
cout << "kumho" << endl;
}
break;
}
}
};

---

this is tier class and I have to finish constructor in class car
(for simple, I skip detail code) -red things are the parts from class Tier

Code:

---

Car()
: make(NULL), passengers(0), fuelcap(0.0), efficiency(0.0), tier(Tier::nexen)
{ }

 Car(char *p_make, int p_passengers, int p_fuelcap, float p_efficiency, Tier::TIER_MAKE p_tiermaker)
: passengers(p_passengers), fuelcap(p_fuelcap), efficiency(p_efficiency), tier(p_tiermaker)
 { }

 ~Car()
 { }

 Car(const Car &c)
: passengers(c.passengers), fuelcap(c.fuelcap), efficiency(c.efficiency), tier(c.tier)
{}

---

Is the parts from class tier in class Car right?
I think default constuctor part should be written about p_tiermaker..
like this : p_tiermaker(Tier::nexen) but it rangs error.

And someone said default constructor part has to be this

Code:

---


car( Tier::TIER_MAKE p_tiermaker = Tier::nexen ) //after i skip

---

but default constructor should be no parameter...? isn't it?
I really confused... give me some words

Quote:

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Originally Posted by antirain

Is the parts from class tier in class Car right?

---

Don't know. All I see is that your initialize some member variable in the Car class. You tell us if it's right or not.

Quote:

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I think default constuctor part should be written about p_tiermaker..
like this : p_tiermaker(Tier::nexen) but it rangs error.

---

What error? For that matter, I don't see your definition for the Car class, so I can't even check if you implemented it right.

Quote:

---

And someone said default constructor part has to be this

Code:

---


car( Tier::TIER_MAKE p_tiermaker = Tier::nexen ) //after i skip

---

but default constructor should be no parameter...? isn't it?
I really confused... give me some words

---

Yes, the default constructor have no parameters, but this one accepts an optional parameter, which means it does not have to be specified, in which case it acts as a default constructor.

Also, for your own sanity, please use std::string instead of char*. The later is very, very dangerous.
Indenting your code wouldn't be a bad idea, either.