Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9:25: error: ‘reopen’ was not declared in this scope reopen("g2.in","r",stdin); ^ user.cpp:10:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("g2.out","w",stdout); ^ user.cpp:11:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^