Compilare: main.cpp: In function 'int main()': main.cpp:50:34: warning: format '%lf' expects argument of type 'double*', but argument 2 has type 'double' [-Wformat=] scanf("%lf %lf", x[i], y[i]); ^ main.cpp:50:34: warning: format '%lf' expects argument of type 'double*', but argument 3 has type 'double' [-Wformat=] main.cpp:46:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("culoar.in", "r", stdin); ^ main.cpp:47:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("culoar.out", "w", stdout); ^ main.cpp:48:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:50:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf", x[i], y[i]); ^