简单的单例实现

class test
{
public:
~test(void);
static test* GetInstance();
int Geta();
private:
static test m_instance;
test(void);
int a;
};

test::test( void )
{
a = 10;
printf("create test!\n");
}

test::~test( void )
{
printf("destroy test!\n");
}

test* test::GetInstance()
{
return &m_instance;
}

int test::Geta()
{
return a;
}

test test::m_instance;

void main()
{

printf("test a:%d\n",test::GetInstance()->Geta());
getchar();

}