View Compilation Error

0_0_14302346_6633.cpp: In function 'int main()':
0_0_14302346_6633.cpp:37:19: error: request for member 'size' in 's', which is of non-class type 'char [20000]'
   int min_pos = s.size();
                   ^
0_0_14302346_6633.cpp:46:16: error: request for member 'size' in 's', which is of non-class type 'char [20000]'
     if (i == s.size() - 3)
                ^