Compilare: user.cpp: In function ‘void infasuratoare()’: user.cpp:61:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<v.size();++i) ^ user.cpp: In function ‘void citire()’: user.cpp:26:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.in","r",stdin); ^ user.cpp:29:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:32:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf",&P[i].first,&P[i].second); ^