Compilare: user.cpp: In function ‘int main()’: user.cpp:48:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<a.size()-1;i++) ^ user.cpp:56:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<a.size();i++) ^ user.cpp:14:9: warning: unused variable ‘nr’ [-Wunused-variable] int nr = 0, nrm = 0, i, maxim = 0; ^ user.cpp:14:17: warning: unused variable ‘nrm’ [-Wunused-variable] int nr = 0, nrm = 0, i, maxim = 0; ^