View Compilation Error

0_0_32652165_20596.cpp: In function 'void output(int, int)':
0_0_32652165_20596.cpp:30:12: error: 'rc' was not declared in this scope
   output(x,rc[root]);
            ^
0_0_32652165_20596.cpp:35:12: error: 'lc' was not declared in this scope
   output(x,lc[root]);
            ^