Compilare: user.c: In function ‘main’: user.c:14:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ user.c:16:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a[i]); ^ user.c:18:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&b[i]); ^ user.c:13:26: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,n,m,lmax=0,x,y; ^ user.c:13:24: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,n,m,lmax=0,x,y; ^