Compilare: user.cpp: In function ‘int main()’: user.cpp:41:9: warning: unused variable ‘da’ [-Wunused-variable] cuv da; ^ user.cpp: In function ‘bool exista(int)’: user.cpp:92:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0;k<H[limita].size();++k) ^ user.cpp: In function ‘std::string caracter(int)’: user.cpp:101:15: warning: variable ‘prod’ set but not used [-Wunused-but-set-variable] long long prod; ^