Compilare: user.cpp: In function ‘int main()’: user.cpp:54:6: warning: unused variable ‘ok’ [-Wunused-variable] bool ok = 0; ^ user.cpp:19:13: warning: unused variable ‘x’ [-Wunused-variable] int x,y,z; ^ user.cpp:19:15: warning: unused variable ‘y’ [-Wunused-variable] int x,y,z; ^ user.cpp:14:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cub2.in", "r", stdin); ^ user.cpp:15:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cub2.out", "w", stdout); ^ user.cpp:20:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d",&p,&n,&v); ^