View Compilation Error

0_0_30393357_22357.cpp: In function 'int main()':
0_0_30393357_22357.cpp:20:9: error: request for member 'length' in 'a', which is of non-class type 'char [1005]'
   i = a.length()-1;
         ^
0_0_30393357_22357.cpp:21:9: error: request for member 'length' in 'b', which is of non-class type 'char [1005]'
   j = b.length()-1;
         ^