View Compilation Error

0_0_1259177_8690.cpp: In member function `void trie::insert(char*)':
0_0_1259177_8690.cpp:32: error: invalid conversion from `char' to `const char*'
0_0_1259177_8690.cpp:32: error:   initializing argument 1 of `size_t strlen(const char*)'
0_0_1259177_8690.cpp: In member function `int trie::search(char*)':
0_0_1259177_8690.cpp:51: error: invalid conversion from `char' to `const char*'
0_0_1259177_8690.cpp:51: error:   initializing argument 1 of `size_t strlen(const char*)'