C++单例模式应用实例

#ifndef _SINGLETON_H_
#define _SINGLETON_H_

class Singleton
{
public:
  static Singleton* GetInstance();
protected:
  Singleton();
private:
  static Singleton *_instance;
};

#endif

#include "singleton.h"
#include 
using namespace std;

Singleton* Singleton::_instance = 0;

Singleton::Singleton()
{
  cout<<"create Singleton ..."<

#include "singleton.h"

int main()
{
  Singleton *t = Singleton::GetInstance();
  t->GetInstance();

  return 0;
}

#ifndef _SINGLETON_H_
#define _SINGLETON_H_

class Singleton
{
public:
  static Singleton* GetInstance();
  void printSomething(const char* str2Print);
protected:
  Singleton();
private:
  static Singleton *_instance;
  int count;
};

#endif

#include "singleton.h"
#include 

using namespace std;

Singleton* Singleton::_instance = 0;

Singleton::Singleton()
{
  cout<<"create Singleton ..."<

#include "singleton.h"

int main()
{
  Singleton *t1 = Singleton::GetInstance();
  t1->GetInstance();
  t1->printSomething("t1");

  Singleton *t2 = Singleton::GetInstance();
  t2->printSomething("t2");
  return 0;
}

CC=g++
CFLAGS = -g -O2 -Wall

all:
  make singleton

singleton:singleton.o\
  main.o  
  ${CC} -o singleton main.o singleton.o

clean:
  rm -rf singleton
  rm -f *.o

.cpp.o:
  $(CC) $(CFLAGS) -c -o $*.o $<