Eroare de compilare: user.cpp:3:9: error: expected constructor, destructor, or type conversion before ‘(’ token freopen ("euclid2.in", "r", stdin); ^ user.cpp:4:9: error: expected constructor, destructor, or type conversion before ‘(’ token freopen ("euclid2.out", "w", stdout); ^ user.cpp: In function ‘int main()’: user.cpp:23:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:27:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^