Compilare: main.cpp: In function 'void adaugare_cuvant(std::__cxx11::string)': main.cpp:31:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<s.size();i++) ~^~~~~~~~~ main.cpp: In function 'int nr_aparitii_cuvant(std::__cxx11::string)': main.cpp:46:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<s.size();i++) ~^~~~~~~~~ main.cpp: In function 'int cel_mai_lung_prefix(std::__cxx11::string)': main.cpp:69:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<s.size();i++) ~^~~~~~~~~ main.cpp: In function 'void stergere_cuvant(std::__cxx11::string)': main.cpp:86:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<s.size();i++) ~^~~~~~~~~