View Compilation Error

0_0_2570260_8838.cpp: In function `void clear()':
0_0_2570260_8838.cpp:22: error: cannot convert `tNode' to `void*' for argument `1' to `void* memset(void*, int, size_t)'
0_0_2570260_8838.cpp: In function `void insert(char*)':
0_0_2570260_8838.cpp:28: error: cannot convert `tNode' to `void*' for argument `1' to `void* memset(void*, int, size_t)'