Compilare: main.cpp: In function 'void addT(int, Trie*)': main.cpp:27:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==s.size()) { ~^~~~~~~~~~ main.cpp: In function 'int searchT(int, Trie*)': main.cpp:42:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==s.size()) return t->end; ~^~~~~~~~~~ main.cpp: In function 'bool deleteT(int, Trie*)': main.cpp:49:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==s.size()) { ~^~~~~~~~~~ main.cpp: In function 'int prefixT(int, Trie*)': main.cpp:67:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==s.size() or !t) return 0; ~^~~~~~~~~~