Compilare: user.cpp: In function ‘int main()’: user.cpp:4:64: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cpal.in","r",stdin),freopen("cpal.out","w",stdout); ^ user.cpp:4:64: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:72: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d%d%d%d",&a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9); ^