nonstatic member reference

[poloblue]

Good Afternoon,

I'm having a little trouble with a class. The error that I'm getting is: a nonstatic member reference must be relative to a specific object in the function void B::printStatic() { cout<<"size is "<<size<<endl; Here is the code that I have.

#include <iomanip>
#include <iostream>
#include <string>

using namespace std;

class  B
{
private: 
 //const int cnt; 
 static int lifeCount; 
 static int deathCount; 
 const int size;   
 char *cat; 
public: 
 B();     
 B(const int n);    
 void print();   
 static void printStatic();
 ~B();     
}; 

int B::lifeCount=0;    
int B::deathCount=0; 

B::B():size(100)   
{
 lifeCount++;   
 cat = new char[size]; 
 strcpy(cat, "I see a head initialization."); 
}

B::B(const int n): size(n)
{ 
 lifeCount++;   
 cat = new char[n]; 
 if (n>50)
  strcpy(cat, "Meow, meow, another head initialization.");
 else
  cat[0]='\0';
}

void B::print()
{
 cout<<"size is => "<< size<<endl; 
 cout<<"cat is => " <<cat<<endl; 
}

B::~B()
{
 deathCount++;    
 printStatic();   
 delete[] cat; 
}

void B::printStatic() 
{
 cout<<"size is " <<size<<endl;
 cout<<lifeCount<<"  many class B objects "
     <<"have been created up to this point."<<endl; 
 cout<<deathCount<<"  many class B objects have "
     <<"died up to this point."<<endl; 
}

int main()
{

return 0;
}

[deceptikon]

You try to print size from a static member function, but size isn't a static member. To access non-static members, you need an object, because that's where memory for non-static members is allocated.

[poloblue]

Deceptikon,

would this work
B.size;
cout<<"size is"<<B.size>>endl;

[deceptikon]

No, B is a class, not an object.

[poloblue]

how about
B tiger;
Can you walk me through.

Thanks

[deceptikon]

I can't walk you through it because what you're doing isn't meaningful. size is an instance member, which means you must have created an object somewhere and given size a value that warrants outputting it.

I don't think you should be printing size from printStatic() at all, so my suggestion would be to remove that line entirely. It's already being printed from print(), so what's the point?

[poloblue]

thank you