View Compilation Error

0_0_20844166_9157.cpp: In function 'double fen1()':
0_0_20844166_9157.cpp:41:4: error: expected primary-expression before '%' token
   }%
    ^
0_0_20844166_9157.cpp:41:4: error: expected primary-expression at end of input
0_0_20844166_9157.cpp:41:4: error: expected '}' at end of input