＃include
using namespace std;
class Test
｛
public:
Test(int aa=1):a（aa）｛｝
Test(){}
void putOut()const{cout<
private:
int a;
static int b=2;};
void main()
{
Test t1（）;
t1.putOut();
const Test t2(2);
t2.putOut();
}