My code is below. The only thing that is not working is the print for the difference. If you run this program, the difference is showing a long string of numbers not the difference between the user's grade and the average grade.
'Barb Dosier
'CO116 Chpt 6Q1
'November 20, 2010
'Program will have the user enter ten numbers and display them in reverse order
Dim sum As Integer
Dim average As Integer
Dim size As Integer
Dim count As Integer
Dim difference As Integer
Print "Enter ten numbers"
size = 2
Dim scores(size) As Integer
For count = 1 to SIZE
Input "Enter a number"; scores(count)
sum = sum + scores(count)
Next
average = sum / SIZE
difference = scores(count) - average
Print
Print "Numbers", "Average", "Difference from average"
Print "*****************************************************"
For count = 2 to 1 step -1
print scores (count), average, difference
Next
Sleep
Dim sum As Integer
Dim average As double
Dim size As Integer
Dim count As Integer
Print "Enter ten numbers"
size = 2
Dim scores(size) As Integer
Dim difference(size) As double
For count = 1 to SIZE
Input "Enter a number"; scores(count)
sum = sum + scores(count)
Next
average = sum / SIZE
Print
Print "Numbers", "Average", "Difference from average"
Print "*****************************************************"
For count = 2 to 1 step -1
difference(count) = scores(count) - average
Print scores (count), average, difference (count)
Next
sleep
The problem is that the difference of each score is going to be different, if that makes any sense :p
Also, average and difference should be doubles rather than integers
Thank you. We briefly touched on doubling in class. Due to an instructor being sick and with a holiday we have not had a class in three weeks and so we have not had any lab time. Obviously this is basic programming.
I have one more that I am having problems with, if you could take a look at that code. When it prints out the classroom and average is not correct. I copied the code below.
'Barb Dosier
'CO 116 Chpt 6Q3
'Displaying class test score results
Dim classroomCount As Integer
Dim studentCount As Integer
Dim count As Integer
Dim room As Integer
Dim score As Integer
Input "How many classrooms are there"; classroomCount
Input "How many students are there"; studentCount
Dim numberOfStudents(classroomCount) As Integer
Dim pointsPerClassroom(classroomCount) As Integer
For count = 1 to studentCount
Print "Student"; count
Do
Input "Which room is the student in"; room
Loop While room < 1 and room <= classroomCount
Input "What is the student's score"; score
numberOfStudents(room) += 1
pointsPerClassroom(room) += score
Next
average = sum / SIZE
average = pointsPerClassroom(room) / numberOfStudents(room)
for count = 1 to classroomCount
Print
Print "Student class scores are as follows:"
Print "Classroom", "# of Students", "Total points", "Average points"
Print "---------------------------------------------------"
Print room, numberOfStudents(count), pointsPerClassroom(count), average
next
Sleep
Barb
'Barb Dosier
'CO116 Chpt 6Q1
'November 20, 2010
'Program will have the user enter ten numbers and display them in reverse order
Dim sum As Integer
Dim average As Integer
Dim size As Integer
Dim count As Integer
Dim difference As Integer
Print "Enter ten numbers"
size = 2
Dim scores(size) As Integer
For count = 1 to SIZE
Input "Enter a number"; scores(count)
sum = sum + scores(count)
Next
average = sum / SIZE
difference = scores(count) - average
Print
Print "Numbers", "Average", "Difference from average"
Print "*****************************************************"
For count = 2 to 1 step -1
print scores (count), average, difference
Next
Sleep
'Barb Dosier
'CO 116 Chpt 6Q3
'Displaying class test score results
Dim classroomCount As Integer
Dim studentCount As Integer
Dim count As Integer
Dim room As Integer
Dim score As Integer
Input "How many classrooms are there"; classroomCount
Input "How many students are there"; studentCount
Dim numberOfStudents(classroomCount) As Integer
Dim pointsPerClassroom(classroomCount) As Integer
'added line:
Dim average(classroomCount) As Double
For count = 1 to studentCount
Print "Student"; count
Do
Input "Which room is the student in"; room
Loop While room < 1 and room <= classroomCount
Input "What is the student's score"; score
numberOfStudents(room) += 1
pointsPerClassroom(room) += score
Next
'removed: average = sum / SIZE
'removed: average = pointsPerClassroom(room) / numberOfStudents(room)
for count = 1 to classroomCount
'added line:
average(count)=pointsPerClassroom(count)/numberOfStudents(count)
Print
Print "Student class scores are as follows:"
Print "Classroom", "# of Students", "Total points", "Average points"
Print "---------------------------------------------------"
'changed Line: Print room, numberOfStudents(count), pointsPerClassroom(count), average into:
Print count, numberOfStudents(count), pointsPerClassroom(count), average(count)
next
Sleep
If you compile your original program with the option "-exx", you could see that there is an "Aborting due to runtime error 6 (out of bounds array access) at line 22" :
(22) difference = scores(count) - average
because at the output of the "for" iteration, count = size + 1, when ubound of scores() is equal to size only (Dim scores(size) As Integer)!
Anyway, it is strongly recommended not to use the value of exit of an iterator (as count) in a program.
Thank you for the tips and explanations. I went through the code last night for the other program to see the difference in "my" program" and the one that actually works. It really helps. I will now try this one.
One more question:
When do you know when to use double instead of single or integer?
'Barb Dosier
'CO116 Chpt 6Q1
'November 20, 2010
'Program will have the user enter ten numbers and display them in reverse order
Dim sum As Integer
Dim average As Integer
Dim size As Integer
Dim count As Integer
Dim difference As Integer
Print "Enter ten numbers"
size = 2
Dim scores(size) As Integer
For count = 1 to SIZE
Input "Enter a number"; scores(count)
sum = sum + scores(count)
Next
average = sum / SIZE
difference = scores(count) - average
Print
Print "Numbers", "Average", "Difference from average"
Print "*****************************************************"
For count = 2 to 1 step -1
print scores (count), average, difference
Next
Sleep
dosierb wrote:
One more question:
When do you know when to use double instead of single or integer?
Barb
If the numbers you are dealing with have fractional components, say 5.7 or 3.14 rather than 6 or 2 then you need to use a floating point type (single or double) to store that information. The significant advantage singles have over doubles is that they take half as much memory to store (4 bytes as opposed to 8), but they have a smaller range of values and a smaller number of digits of accuracy. The smaller memory size can be useful if you were writing a program that was going to store millions of values in memory at the same time for example, otherwise no real reason not to do it all with doubles.
