Eroare de compilare: user.cpp: In function ‘void insert(nod*, char*)’: user.cpp:24: warning: array subscript has type ‘char’ user.cpp:26: warning: array subscript has type ‘char’ user.cpp:30: warning: array subscript has type ‘char’ user.cpp: In function ‘void delet(nod*, char*)’: user.cpp:42: warning: array subscript has type ‘char’ user.cpp: In function ‘void aparitii(nod*, char*)’: user.cpp:60: warning: array subscript has type ‘char’ user.cpp: In function ‘void prefix(nod*, char*, int)’: user.cpp:66: error: invalid conversion from ‘int’ to ‘nod*’ user.cpp:63: error: too few arguments to function ‘void prefix(nod*, char*, int)’ user.cpp:66: error: at this point in file user.cpp: In function ‘int main()’: user.cpp:71: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:72: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:76: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result user.cpp:87: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result