View Compilation Error

0_0_13946082_9900.cpp: In function 'int main()':
0_0_13946082_9900.cpp:182:13: error: 'g_maxDepth' was not declared in this scope
             g_maxDepth = 0;
             ^
0_0_13946082_9900.cpp:192:28: error: 'depth' was not declared in this scope
             printf("%d\n", depth);
                            ^