Compilare: user.c: In function ‘main’: user.c:9:50: warning: unused variable ‘b’ [-Wunused-variable] int x,y,n,l,pos,i,dir,k,x1,y1,x2,y2,nr,min,a,b,arie; ^ user.c:9:48: warning: unused variable ‘a’ [-Wunused-variable] int x,y,n,l,pos,i,dir,k,x1,y1,x2,y2,nr,min,a,b,arie; ^ user.c:9:44: warning: unused variable ‘min’ [-Wunused-variable] int x,y,n,l,pos,i,dir,k,x1,y1,x2,y2,nr,min,a,b,arie; ^ user.c:10:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("zona.in","r",stdin); ^ user.c:11:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("zona.out","w",stdout); ^ user.c:12:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&x,&y,&n,&l); ^ user.c:19:18: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&dir); ^