*When masculine nouns begin with a vowel or silent 'h', cet is
used.
Cet hôtel est bon marché.
This hotel is inexpensive.
The above demonstratives are used with nouns and are technically adjectives.
Ce is equivalent to 'this' & 'that' however it is used only with
the verb être. It is shortened to c' when être
is in a form that begins with an e.
The following demonstratives are used to point out objects.
Normally either -ci, indicating that the object is near, or -là,
indicating distance, is attached to these pronouns.
Finally there is cela, and it's informal equivalent, ça.
Both can be use to refer to objects as well as the indefinite- things like ideas
and events. They are often used when making general statements about something.
or when an object is unknown.