Compilare: main.cpp: In function 'int hashf(std::__cxx11::string)': main.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < str.length(); i++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:96:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = lmax; i < text.length(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:94:9: warning: unused variable 'st' [-Wunused-variable] int st = lmax; ^~ main.cpp:90:23: warning: 'lmax' may be used uninitialized in this function [-Wmaybe-uninitialized] str1 = text.substr(0, lmax); ~~~~~~~~~~~^~~~~~~~~