Moslem Anatouf scored a brace in the 22nd and 51st minute to give Algeria a dream 2-0 win over Somalia on Saturday.
On Sunday, Senegal face Congo Brazzaville in the other Group A match.
Group B takes centre stage on Sunday with old foes Zambia and Nigeria renewing their rivalry.
In the 2015 edition, Victor Osihmen and Patson Daka headlined the tie in Niger with the former scoring a brace in the 3-1 win for the Eaglets while Daka scored the consolation.
Later on Sunday night, Morocco take on South Africa in the other Group B tie.
Group C only has three countries following the expulsion of South Sudan after five players failed the MRI scan for age cheating.
