Jelly Bean MR1  |  4.2.2_r1
C++程序  |  21行  |  183 B 

@class A;

@class A;

@class A;

@class B;

@protocol P1;

@protocol P2;
@protocol P2;

struct S1;
struct S2;
struct S2;

#ifdef __cplusplus
template<typename T> class Vector;
#endif