View Compilation Error

0_0_14523714_27846.cpp: In function 'void PrePro()':
0_0_14523714_27846.cpp:51:6: error: 'in' was not declared in this scope
  for(in
      ^
0_0_14523714_27846.cpp:51:6: error: expected primary-expression at end of input
0_0_14523714_27846.cpp:51:6: error: expected ';' at end of input
0_0_14523714_27846.cpp:51:6: error: expected primary-expression at end of input
0_0_14523714_27846.cpp:51:6: error: expected ')' at end of input
0_0_14523714_27846.cpp:51:6: error: expected statement at end of input
0_0_14523714_27846.cpp:51:6: error: expected '}' at end of input