Explain the ceremonial and real executive functions of the president in the presidential system of government

Ceremonial functions of a President is only exercised in the case of an emergency such as a coup d'etat or government breakdown. This is because the Presidents who perform ceremonial functions are known as Head of States and not Head of Governments. This is common in countries with a monarchical origin and the monarchs are referred to as the Head of States.

The real executive functions of a President which is the Head of Government in this case include supervision and control of the executive arm of government, preparation of executive budgets to sent to the Congress and implementation of policies and programs.