View Compilation Error

0_0_2562108_21972.cpp:10: error: size of array `tnodes' is too large
0_0_2562108_21972.cpp: In function `void clear()':
0_0_2562108_21972.cpp:20: error: `tnodes' undeclared (first use this function)
0_0_2562108_21972.cpp:20: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2562108_21972.cpp: In function `void insert(char*)':
0_0_2562108_21972.cpp:25: error: `tnodes' undeclared (first use this function)
0_0_2562108_21972.cpp: In function `void gen_next()':
0_0_2562108_21972.cpp:35: error: `tnodes' undeclared (first use this function)
0_0_2562108_21972.cpp: In function `void ac(char*)':
0_0_2562108_21972.cpp:56: error: `tnodes' undeclared (first use this function)