/in/foo.cc: In function 'int minPath(const char**, int, int)':
/in/foo.cc:8:25: error: 'i' was not declared in this scope
  if (*((char*)s + (n-1)*i + m-2) != '1')
                         ^
/in/foo.cc:10:25: error: 'i' was not declared in this scope
  if (*((char*)s + (n-2)*i + m-1) != '1')
                         ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:25:25: error: cannot convert 'char (*)[m]' to 'const char**' for argument '1' to 'int minPath(const char**, int, int)'
  cout << minPath(s, n, m);
                         ^