Question

how are the president and vice president elected??

Answer 1

The Vice- President is elected indirectly, by an electoral college consisting of members of both houses of the parliament. The election of the vice- president is slightly different from the election of the President as the members of state legislatures are not part of the electoral college for the vice-  presidential election.

President Election Process
The new president is chosen by an electorl college consisting of the elected memebers of both houses of Parliament(M.p.), The elected members of the state legislative Assemblies(Vidhan Sabha ) of all States and the elected memebers of the legislative assemblies(M.L.A) of two Union Territories. 

Answer 2

The Vice- President is elected indirectly, by an electoral college consisting of members of both houses of the parliament. The election of the vice- president is slightly different from the election of the President as the members of state legislatures are not part of the electoral college for the vice-  presidential election.

President Election Process

The new president is chosen by an electorl college consisting of the elected memebers of both houses of Parliament(M.p.), The elected members of the state legislative Assemblies(Vidhan Sabha ) of all States and the elected memebers of the legislative assemblies