Compilare: user.cpp: In function ‘void f()’: user.cpp:27:12: warning: unused variable ‘j’ [-Wunused-variable] {int i,j,x,k,q,maxtot; ^ user.cpp:27:14: warning: unused variable ‘x’ [-Wunused-variable] {int i,j,x,k,q,maxtot; ^ user.cpp:27:16: warning: unused variable ‘k’ [-Wunused-variable] {int i,j,x,k,q,maxtot; ^ user.cpp:27:18: warning: unused variable ‘q’ [-Wunused-variable] {int i,j,x,k,q,maxtot; ^ user.cpp:29:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&v[i].x,&v[i].y,&v[i].z); ^ user.cpp: In function ‘int main()’: user.cpp:50:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen ("cutii.in","r",stdin); ^ user.cpp:51:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cutii.out","w",stdout); ^ user.cpp:53:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&t); ^