Compilare: user.cpp: In function ‘bool do_remaining_variables_fulfil_each_condition(std::ifstream&, std::vector<long unsigned int>&, std::vector<long int>, int, long unsigned int, long unsigned int)’: user.cpp:14:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sume.size(); ++i) { ~~^~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:117:17: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result [-Wunused-result] system("PAUSE"); ^