cs1311
                                  spring 2001                  
				  45.0 points


                        due 09:00:00 AM  Jan 19, 2001                 


   Please make sure that ALL essays, short answers, definitions, and
   explanations are in your own words.  NO credit will be given for
   answers taken directly from the book, lecture notes, etc...

   Turn in this assignment electronically using WebWork



[p1]
5.0 points

Explain the difference between a data type and a variable.  Give an example
(in english) of when each would be used, and illustrate your answers with 
pseudo-code declarations.


[p2]
10.0 points

For each of the following, write the appropriate variable or constant
declaration:

a. For holding the value of a course name;
b. For holding the value of a student's letter grade;
c. For holding the value of a student's quiz percentage;
d. To specify whether a student passed or not;
e. To specify the number of minutes in a year.


[p3]
10.0 points

Consider the following code fragment:
-------------------------------------------------------

first, last isoftype String
print( "Please enter your first and last names")
read( first )
read( last )

if( (first = "David") OR (first = "Bill" ) ) then
    print( "a ")
    if( last = "Smith" ) then
	print( "tall " )
    else 
	print( "short " )
    endif
    print( "lecturer" )

else
    if( last = "Jones" ) then
	print( "a Welshman" )
    else 
	print( "a dog owner" )
    endif
endif

-------------------------------------------------------

What is the answer when the values of first and last entered are:
a. Bill Sykes
b. Bill Leahy
c. Fred Jones
d. David Smith
e. David Jones

[p4]
10.0 points

Write an algorithm which will prompt the user for three numbers, read in
the numbers, and print out their sum and average.
Be sure to use good documentation in your answer.


[p5]
10.0 points

Write an algorithm  which will ask the user to input 3 numbers, find
the middle value (not the largest or smallest) of three numbers, and 
print the value back to the user.