Compilare: user.cpp: In function ‘int main()’: user.cpp:38:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < numere.size(); ++i) ^ user.cpp:16:21: warning: unused variable ‘k’ [-Wunused-variable] int i, a, b, c, w, k, ok; ^ user.cpp:16:24: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int i, a, b, c, w, k, ok; ^