/in/foo.cc: In function 'int main()':
/in/foo.cc:15:9: error: invalid types 'char[int]' for array subscript
   if(a[i]=='W')w++;
         ^
/in/foo.cc:34:9: error: invalid types 'char[int]' for array subscript
   if(a[i]=='W')w++;
         ^