Suffix used for single bond, double bond and triple bond on carbon atoms respectively are:
-ane, -ene, -yne
Let's take a look at the primary suffix used for the different carbon chains based on their nature.
Nature of carbon chainPrimary suffixGeneric namesaturated C-C-aneAlkaneUnsaturated, C = C-eneAlkeneUnsaturated, C ≡ C-yneAlkyne