```    Program f08qvfe

!     F08QVF Example Program Text

!     Mark 26 Release. NAG Copyright 2016.

!     .. Use Statements ..
Use nag_library, Only: nag_wp, x04dbf, ztrsyl
!     .. Implicit None Statement ..
Implicit None
!     .. Parameters ..
Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
Real (Kind=nag_wp)               :: scale
Integer                          :: i, ifail, info, lda, ldb, ldc, m, n
!     .. Local Arrays ..
Complex (Kind=nag_wp), Allocatable :: a(:,:), b(:,:), c(:,:)
Character (1)                    :: clabs(1), rlabs(1)
!     .. Executable Statements ..
Write (nout,*) 'F08QVF Example Program Results'
Write (nout,*)
Flush (nout)
!     Skip heading in data file
lda = m
ldb = n
ldc = m
Allocate (a(lda,m),b(ldb,n),c(ldc,n))

!     Read A, B and C from data file

!     Solve the Sylvester equation A*X + X*B = C for X
!     The NAG name equivalent of ztrsyl is f08qvf
Call ztrsyl('No transpose','No transpose',1,m,n,a,lda,b,ldb,c,ldc,scale, &
info)
If (info>=1) Then
Write (nout,99999)
Write (nout,*)
Flush (nout)
End If

!     Print X
!     ifail: behaviour on error exit
!             =0 for hard exit, =1 for quiet-soft, =-1 for noisy-soft
ifail = 0
Call x04dbf('General',' ',m,n,c,ldc,'Bracketed','F8.4',                  &
'Solution Matrix','I',rlabs,'I',clabs,80,0,ifail)

99999 Format (/,' A and B have common or very close eigenvalues.',/,' Pe',     &
'rturbed values were used to solve the equations')
End Program f08qvfe
```