1. Writing a C++ Program

Question 1

True or false?

Every variable in C++ must be associated with a specific type.

Answer 1

True

Question 2

True or false?

Every function in C++ must return a value

Answer 2

False

Question 3

According to the C++ standard, what is the name of the function that is the starting point for a program?

Answer 3

main()

Question 4

True or false?

A class can consist of multiple member data variables of different types, but each type must be specified when the class is defined.

Answer 4

True

Question 5

True or false?

The member functions of a class always have access to every member data variable of that class.

Answer 5

True

Question 6

True or false?

The member data variables in a class can only be access by the member functions of that class.

Answer 6

False

Question 7

Which C++ directive is used to insert the contents of another file at the current location while processing the current file?

Answer 7

include

The file indicated by the string after the “#include” directive is compiled before the rest of the current file is compiled.

Question 8

Given the following code:

namespace uiuc {
    class Pair {
        double a,b;
    };
}

How would you create a variable “p” of type Pair outside of the namespace declaration?

Answer 8

uiuc::Pair p;

We have to reference the namespace to access the classes defined in it.

Question 9

What keyword is used to indicate which namespace(s) to search to find classes and variables when they are referenced throughout the rest of the program?

Answer 9

using

The “using” keyword indicates to the compiler from which namespace references to classes and variables should be found.

Question 10

What is the namespace of the C++ Standard Library?

Answer 10

std

Question 11

Which operator is used to send a sequence of strings, numbers, and other values to the standard library’s cout object in a specific order so that they will be printed to the console?

Answer 11

«

This is called the “streaming” operator and sends the operand on its right to the stream on its left.