When
the aldehyde group is attached to a ring, the suffix carbaldehyde
is added after the full name of the cycloalkane The numbering of
the ring carbon atoms start from the carbon atom attached to the
aldehyde group The name of the simplest aromatic aldehyde
carrying 
the 
aldehyde 
group 
on 
a 
benzene 
ring 
is
benzenecarbaldehyde However, the common name benzaldehyde
is also accepted by IUPAC