They correspond roughly to the English "some" (des) and "these/those" (ces). A native speaker may be able to give a more in-depth explanation.

"d" and "c" yes???

Salut Oscar, 'des' is the plural of the indefinite article 'de' ,so here in the context of this question it means 'some' or 'any' as Daniel mentioned: "Would you like to have some cakes?" 'ces' is the plural of the demonstrative adjective 'ce' and means 'these' or 'those' . "Would you like to have these/those cakes?"