The Waite Group's C++ Primer Plus, Third Edition

Chapter 2

A1:	They are called functions.
A2:	It causes the contents of the iostream file to be substituted for this directive before final compilation.
A3:	It makes definitions made in the std namespace available to a program.
A4:	cout << "Hello, world\n";
A5:	int cheeses;
A6:	cheeses = 32;
A7:	cin >> cheeses;
A8:	cout << "We have " << cheeses << " varieties of cheese\n";
A9:	It tells us that the function froop() expects to be called with one argument, which will be type double, and that the function will return a type int value.
A10:	You don't use return in a function when the function has return type void.