View Compilation Error

0_0_3065956_2628.cpp: In function `int main()':
0_0_3065956_2628.cpp:118: error: `node' undeclared (first use this function)
0_0_3065956_2628.cpp:118: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3065956_2628.cpp:118: error: `root' undeclared (first use this function)
0_0_3065956_2628.cpp:118: error: `node' has not been declared