Compilare: main.cpp: In function 'void Add(nod*, std::__cxx11::string, int)': main.cpp:22:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k==word.size()) ~^~~~~~~~~~~~~ main.cpp: In function 'int Erase(nod*, std::__cxx11::string, int)': main.cpp:43:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k==word.size()) ~^~~~~~~~~~~~~ main.cpp: In function 'int Occurances(nod*, std::__cxx11::string, int)': main.cpp:78:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k==word.size()) return root->occ; ~^~~~~~~~~~~~~ main.cpp:82:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( k<word.size() && root->p[idx] ) ~^~~~~~~~~~~~ main.cpp: In function 'int Prefix(nod*, std::__cxx11::string, int)': main.cpp:91:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( k<word.size() && root->p[idx] ) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:109:18: warning: unused variable 'ok' [-Wunused-variable] bool ok=0; ^~