/in/foo.cc: In function 'int main()':
/in/foo.cc:10:3: error: 'n' was not declared in this scope
   n[i] = b % 2;
   ^
/in/foo.cc:16:11: error: 'n' was not declared in this scope
   cout << n[j];
           ^
/in/foo.cc:5:12: warning: unused variable 'c' [-Wunused-variable]
  int m, b, c[1000], i = 0;
            ^