View Compilation Error

0_0_21529902_21220.cpp: In function 'void update(int, int, int, int)':
0_0_21529902_21220.cpp:162:13: error: 'in' was not declared in this scope
         for(in
             ^
0_0_21529902_21220.cpp:162:13: error: expected primary-expression at end of input
0_0_21529902_21220.cpp:162:13: error: expected ';' at end of input
0_0_21529902_21220.cpp:162:13: error: expected primary-expression at end of input
0_0_21529902_21220.cpp:162:13: error: expected ')' at end of input
0_0_21529902_21220.cpp:162:13: error: expected statement at end of input
0_0_21529902_21220.cpp:162:13: error: expected '}' at end of input
0_0_21529902_21220.cpp:162:13: error: expected '}' at end of input