2005 Mar 15

C++ Lessons by Nick Morrow

Lesson 1 Quiz 1 (now with answers added)

If you haven't studied lesson 1 you can find it in the Files section
here:

http://groups.yahoo.com/group/CPlusPlusforeCSandOS2

Questions:

1.  Which of the following is not a proper variable name?

    A.  number_of_widgets

    B.  x

    C.  process629

    D.  2004_total_expenses

Answer: D.  It is not proper to start a C++ variable name
with a number.

2.  Assuming you have a variable named "total_widgets"
of type "int", which of the following in not a proper
way to declare this variable?

    A.  int total_widgets;

    B.  int total_widgets = 0

    C.  int total_widgets = 0;

    D.  int total_widgets = 4;

Answer: B.  There should be a ";" at the end of the
statement.

3.  Is the variable "myVar" the same variable as "myvar"?

    A.  Yes

    B.  No

Answer: B.  Case does matter in C++.  Be careful, this isn't
REXX!

4.  The following is not a good example of declaring more than
one like type variable:

    A.  float var1 = 0.0;
        float var2 = 0.0;

    B.  float var1 = 0.0, var2 = 0.0;

    C.  float var1,
        float var2

    D.  float var1, var2;

Answer: C.  There should be a ";" at the end
of the second statement.  C++ statements require
a semicolon at the end of statements.  This is not
optional.