View Compilation Error

0_0_30412511_21871.cpp:27:12: error: expected unqualified-id before 'return'
 #define re return 0;
            ^
0_0_30412511_21871.cpp:63:2: note: in expansion of macro 're'
  re
  ^
0_0_30412511_21871.cpp:64:1: error: expected declaration before '}' token
 }
 ^