View Compilation Error

0_0_23181027_30220.cpp:6:1: error: expected unqualified-id before '<' token
 <DIV >const double PI = 3.1415926;
 ^
0_0_23181027_30220.cpp:8:1: error: expected unqualified-id before '<' token
 <DIV >struct TPoint
 ^
0_0_23181027_30220.cpp:12:1: error: expected unqualified-id before '<' token
 <DIV >TPoint p[maxn];
 ^
0_0_23181027_30220.cpp:15:1: error: expected unqualified-id before '<' token
 <DIV >inline int Multi(const TPoint &p0, const TPoint &p1, const TPoint &p2)
 ^
0_0_23181027_30220.cpp:19:1: error: expected unqualified-id before '<' token
 <DIV >inline bool cmp(const TPoint &a, const TPoint &b)
 ^
0_0_23181027_30220.cpp:23:1: error: expected unqualified-id before '<' token
 <DIV >bool input()
 ^