The function of the President in the 1979 Constitution of Nigeria are:
(i) The president has the power to represent the country at different international conferences, e.g U.N.O.
(ii) He also has the power to appoint members of his cabinet (ministers). However, the parliament has to approve the appointment.
(iii) The President is also the Commander-in-Chief of the Armed Forces, e.g. Army, Navy, Air force. etc.
(iv) The annual budget is prepared by him.
(v) The President has the power to sign bills passed by the National Assembly.
(vi) He addresses the joint meeting of the National Assembly, that is, the Senate and House of Representatives.
(vii) The President also initiates moves on revenue allocation.
(viii) He appoints Ambassadors, High Commissioners, Ministers, Judges, Service Chiefs (army, navy and Air Force) etc.
(ix) He is involved in the maintenance of law and order.
(x) He pardons those convicted of crime, e.g. treason and other charges, through the power of prerogative of mercy.
(xi) He has the power to declare state of emergency in the country especially when there is a war or crisis.
(xii) He receives representatives from different parts of the world to Nigeria.