What is the scope of computer science engineering after 4-5 years?

You don't have to think or worry about scopes in any field as long as your passion and interest lies in it. Never be an engineer if you don't want to.

Computers is the basic requirement of every business and it even forms part of household requirement. It is also the mobile apps development which is part of life now. Thus, this industry has immense opportunities and options in future. All those who enter in this field at present will be able to ma