wap to implement singleton class in c++??

general
1

wap to implement singleton class in c++??

2

The singleton can be implemented in following way

#include

using namespace std;

class Singleton
{
private:
static bool instanceFlag;
static Singleton single;
Singleton()
{
//private constructor
}
public:
static Singleton getInstance();
void method();
~Singleton()
{
instanceFlag = false;
}
};

bool Singleton::instanceFlag = false;
Singleton* Singleton::single = NULL;
Singleton* Singleton::getInstance()
{
if(! instanceFlag)
{
single = new Singleton();
instanceFlag = true;
return single;
}
else
{
return single;
}
}

void Singleton::method()
{
cout << “Method of the singleton class” << endl;
}

int main()
{
Singleton *sc1,*sc2;
sc1 = Singleton::getInstance();
sc1->method();
sc2 = Singleton::getInstance();
sc2->method();

return 0;

}