Compilare: user.cpp: In function ‘int main()’: user.cpp:50:17: warning: unused variable ‘x’ [-Wunused-variable] int i,j,k,t,x,y,S; ^ user.cpp:50:19: warning: unused variable ‘y’ [-Wunused-variable] int i,j,k,t,x,y,S; ^ user.cpp: In function ‘void Read()’: user.cpp:16:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ap[i]); ^ user.cpp:19:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&M); ^ user.cpp: In function ‘int main()’: user.cpp:47:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ordini.in","r",stdin); ^ user.cpp:48:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ordini.out","w",stdout); ^