Compilare: user.c: In function ‘main’: user.c:19:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cobai.in","r",stdin); ^ user.c:20:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cobai.out","w",stdout); ^ user.c:21:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.c:58:38: warning: ‘dir’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(a[xx+dx[dir]][yy+dy[dir]]!='+') ^ user.c:43:10: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] cy[1]=y; ^ user.c:42:10: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] cx[1]=x; ^