Compilare: user.cpp: In function ‘int main()’: user.cpp:38:13: warning: unused variable ‘q’ [-Wunused-variable] int i,k,q,x,y,z; ^ user.cpp:38:15: warning: unused variable ‘x’ [-Wunused-variable] int i,k,q,x,y,z; ^ user.cpp:38:17: warning: unused variable ‘y’ [-Wunused-variable] int i,k,q,x,y,z; ^ user.cpp:38:19: warning: unused variable ‘z’ [-Wunused-variable] int i,k,q,x,y,z; ^ user.cpp:39:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("beri.in","r",stdin); ^ user.cpp:40:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("beri.out","w",stdout); ^ user.cpp:42:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&k); ^ user.cpp:44:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&c[i]); ^