Compilare: main.cpp: In function 'void ad_cuv(char*)': main.cpp:21:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(w);i++) ~^~~~~~~~~~ main.cpp: In function 'bool del_cuv(int, Trie*, char*)': main.cpp:35:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==strlen(w)) ~~~^~~~~~~~~~~ main.cpp: In function 'void print_nrcuv(char*)': main.cpp:60:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(w)&&q->fii[w[i]-'a']!=0;i++) ~^~~~~~~~~~ main.cpp:62:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] g<<(q->nr_cuvinte)*(i==strlen(w))<<'\n'; ~^~~~~~~~~~~ main.cpp: In function 'void prefix_maxim(char*)': main.cpp:69:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(w)&&aux->fii[w[i]-'a']!=NULL;aux=aux->fii[w[i]-'a'],i++); ~^~~~~~~~~~ main.cpp:69:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=0;i<strlen(w)&&aux->fii[w[i]-'a']!=NULL;aux=aux->fii[w[i]-'a'],i++); ^~~ main.cpp:70:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' g<<i<<'\n'; ^