Compilare: user.cpp: In function ‘char* cauta(Trie*, char*)’: user.cpp:62:13: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp:56:10: warning: unused variable ‘sf’ [-Wunused-variable] char sf[33]; ^ user.cpp:57:21: warning: unused variable ‘k2’ [-Wunused-variable] int k=-1, R, i, k2; ^ user.cpp: In function ‘void update_query(int)’: user.cpp:104:32: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[33]’ [-Wformat=] scanf("%c %s",&op,&nume); ^ user.cpp: In function ‘int main()’: user.cpp:120:13: warning: unused variable ‘i’ [-Wunused-variable] int nrt,i,NrPers,NrQuery; ^ user.cpp:121:10: warning: unused variable ‘nume’ [-Wunused-variable] char nume[33]; ^ user.cpp: In function ‘int update(Trie*, char*, int)’: user.cpp:51:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘char* cauta(Trie*, char*)’: user.cpp:76:5: warning: ‘R’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(nod->R!=R || !nod->nr) ^ /tmp/cct4nJTn.o: In function `citeste(int)': user.cpp:(.text+0x3bf): warning: the `gets' function is dangerous and should not be used.