```    Program f01lhfe

!     F01LHF Example Program Text

!     Mark 26.2 Release. NAG Copyright 2017.

!     .. Use Statements ..
Use nag_library, Only: f01lhf, f04lhf, nag_wp, x04caf
!     .. Implicit None Statement ..
Implicit None
!     .. Parameters ..
Integer, Parameter               :: lena = 200, nin = 5, nout = 6
!     .. Local Scalars ..
Real (Kind=nag_wp)               :: tol
Integer                          :: i, ifail, ir, j, k, kpivot, ldb, n,  &
nbasek, nbloks
!     .. Local Arrays ..
Real (Kind=nag_wp), Allocatable  :: a(:), b(:,:)
Integer, Allocatable             :: blkstr(:,:), pivot(:)
!     .. Executable Statements ..
Write (nout,*) 'F01LHF Example Program Results'
Write (nout,*)
Flush (nout)
!     Skip heading in data file
Allocate (a(lena),blkstr(3,nbloks))
nbasek = 0
n = 0
Do i = 1, nbloks
If (nbasek+blkstr(2,i)*blkstr(1,i)>lena) Then
Write (nout,*) ' Array A is too small for this problem'
Go To 100
Else
Do k = 1, blkstr(1,i)
End Do
End If
nbasek = nbasek + blkstr(2,i)*blkstr(1,i)
n = n + blkstr(1,i)
End Do
ldb = n
Allocate (b(ldb,ir),pivot(n))
tol = 0.0E0_nag_wp

!     ifail: behaviour on error exit
!            =0 for hard exit, =1 for quiet-soft, =-1 for noisy-soft
ifail = 0
Call f01lhf(n,nbloks,blkstr,a,lena,pivot,tol,kpivot,ifail)

ifail = 0
Call f04lhf('N',n,nbloks,blkstr,a,lena,pivot,b,ldb,ir,ifail)

Call x04caf('G','X',n,ir,b,ldb,'Component Solution',ifail)
100   Continue

End Program f01lhfe
```