Compilare: user.cpp:13:1: warning: ‘typedef’ was ignored in this declaration [enabled by default] }; ^ user.cpp: In function ‘int potrivit(std::string, std::string)’: user.cpp:27:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x[k]==y[k] && k<x.length()) ++k; ^ user.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k==x.length()) rez=1; ^