C++--單例類模板

#include
#include
#include “Singleton.h”
using namespace std;

//單例類模板
class SObject
{
friend class Singleton;

SObject(const SObject&);
SObject& operator = (const SObject&);
SObject()
{
    
}

public:
void print()
{
cout<<"this = "<<this<<endl;
}
};
int main()
{
SObject* s = Singleton::GetInstance();
SObject* s1 = Singleton::GetInstance();
SObject* s2 = Singleton::GetInstance();

s->print();
s1->print();
s2->print();


return 0;

}

#ifndef SINGLETON_H
#define SINGLETON_H

template
class Singleton
{
static T* c_instance;
public:
static T* GetInstance();
};
template
T* Singleton::c_instance = NULL;

template
T* Singleton::GetInstance()
{
if(c_instance == NULL)
{
c_instance = new T();
}

return c_instance;

};
#endif