7.Explain the following: 1.istream 2.ostream 3.iostream 8.What are the various standard manipulators used in C++? 9.How is the comment statement represented in C++? What are the uses of defining a...

7.Explain the following:

1.istream

2.ostream

3.iostream

8.What are the various standard manipulators used in C++?

9.How is the comment statement represented in C++? What are the uses of defining a comment statement in a program?

10.Explain the syntactic rules governing the following manipulators.

1.setbase

2.setfill

3.setw

4.setprecision