View Compilation Error

0_0_4956646_26962.cpp:14: error: size of array `Wtree' is too large
0_0_4956646_26962.cpp: In function `int main()':
0_0_4956646_26962.cpp:26: error: `Wtree' undeclared (first use this function)
0_0_4956646_26962.cpp:26: error: (Each undeclared identifier is reported only once for each function it appears in.)