/in/foo.cc: In function 'int main()':
/in/foo.cc:14:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (int i = 0; i < m; i++);
  ^~~
/in/foo.cc:15:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   cin >> tao[i];
   ^~~
/in/foo.cc:15:14: error: 'i' was not declared in this scope
   cin >> tao[i];
              ^