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Problems with Template method

theCount (3)
Hey guys, I am new to classes in c++ and am getting this error whenever I compile my code, and it's driving me mad.

Error:


Main.cpp:(.text+0xe5): undefined reference to `Sniper::Sniper(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'

collect2: ld returned 1 exit status
make: *** [task1] Error 1

Here is my code:

in main I have the following:

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Survivor* sniper = new Sniper(names[0]);
sniper->attack(charger);
delete sniper;


in my Sniper.h for sniper i have:
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class Sniper : public Survivor
{

	
	public:
	
   Sniper(string);
	~Sniper();
	
	/*virtual*/ bool hitZombie(Zombie*);
	
	/*virtual*/ void celebrate();
		
	/*virtual*/ bool getHit(Zombie*) ;			
			
	/*virtual*/ void die() ;
			

};


in my Sniper.cpp i have:

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bool Sniper::hitZombie(Zombie* z)

{
	int currentHP = 999;
	
	currentHP = z->takeDamage(damage);
	
	cout << "Sniper " << name << "fires a " << primaryWeapon << " at the zombie." << endl;
	
	if (currentHP <= 0)		
	{
		
		return true;
	}
	else
		return false;
	
	
}
void Sniper::celebrate()
{
	cout << name<< " exclaims \"Headshot!\" "<<endl;
}

bool Sniper::getHit(Zombie* z) 
{
	int zombieDamage = 0;
	
	zombieDamage  = z->getDamage();
	
	hp = hp - zombieDamage;
	
	cout << name << " swears in 13 different languages as he takes " << zombieDamage<< " damage." << endl;
	
	if ( hp <= 0)
	{
			return true;
	}
	else
		return false;
	
}

void Sniper::die()
{
	cout << name << " lead a good life. He will be missed."<<endl;
	
}

in my Survivor.h i have:


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class Survivor

{

protected:

    string name;

	int hp;

	string primaryWeapon;

	string secondaryWeapon;

	int damage;

	

public:

	// constructs a survivor with the specified name

    Survivor(string);

	~Survivor();

	

	void attack(Zombie*);
	

	virtual bool hitZombie(Zombie*) = 0;

	virtual void celebrate() = 0;

	virtual bool getHit(Zombie*) = 0;

	virtual void die() = 0;

};


in my survivor.cpp i have:
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Survivor::Survivor(string name)

	: name(name), hp(1), primaryWeapon("Right Hand"), secondaryWeapon("Left Hand"), damage(1)

{

	cout << "Recruiting a Survivor!" << endl;						

}



Survivor::~Survivor()

{



}




void Survivor::attack(Zombie *z)

{

	cout << name << " attacks a Zombie!" << endl;					

	while (hp > 0)

	{

	

		if (hitZombie(z))

		{

			// The zombie died, celebrate and move on with life.

			celebrate();

			return;

			

		}

		else

		{

			if (getHit(z))

			{

				// Got killed by the zombie. Survivor now dies.

				die();

				

			}

		}

		

	}

	

}



Help in this matter will be greatly appreciated!!

Thanks

Last edited on
viliml (791)
Did you ever get the crazy idea to actually implement the constructor somewhere?
theCount (3)
I did but whenever i tried it threw errors back in my face. I am unsure how to implement it correctly if you could please help me with that.

Thanks
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