Compilare: main.cpp: In function 'void baga(trie*, int)': main.cpp:25:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ind==s.size()) nod->nrc++; ~~~^~~~~~~~~~ main.cpp: In function 'int cauta(trie*, int)': main.cpp:36:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ind==s.size()) return nod->nrc; ~~~^~~~~~~~~~ main.cpp: In function 'int cauta3(trie*, int)': main.cpp:42:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ind==s.size()||nod->c[s[ind]-'a']==0) return ind; ~~~^~~~~~~~~~ main.cpp: In function 'void scoate(trie*, int)': main.cpp:47:20: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(ind=s.size()) nod->nrc--; ^