Stuck on my last homework problem.

Question

0.00/5 (No votes)

See more:

Hello I'm working on a homework programs, but I'm a little stuck. I need to count pennies in a loop by the number of days entered, however the number of pennies needs to start at 1 and proceed to double each day. It also needs to total at the end.

Notes:
1. Written on VB 2010

2. The point of the homework is to use loops properly. The loop part does what its
suppose to, however I want the program to do what its suppose to do.

3. Don't worry about cosmetic suggestions, I always add them in/edit the .Writelines
at the end.

What I have tried:

The first one:

VB

Module Module1

    Sub Main()
        Dim Pennies As Double = 0.1
        Dim NumberOfDays As Integer = 0
        Dim InvalidInput As Integer = 0
        Dim Counter As Integer

        While InvalidInput <= 0
            Console.WriteLine("Enter number of days worked")
            NumberOfDays = Console.ReadLine
            If NumberOfDays >= 1 Then
                For Counter = 1 To NumberOfDays
                    Console.WriteLine("Day " & Counter & " you earned: $" & Pennies * 2)
                Next
            ElseIf NumberOfDays = InvalidInput Then
                Console.WriteLine("Invalid input")
            End If
        End While
    End Sub

End Module

Posted 23-Feb-16 6:59am

Member 12312671

Updated 24-Feb-16 9:25am

Add a Solution

Comments

Kenneth Haugland 23-Feb-16 13:16pm

Double each day? You would need to do something like this then:
Double TotalMoney = Pennies
for i as integer = 1 to NumberOfDays
TotalMoney * = 2
next

Maciej Los 23-Feb-16 13:19pm

This is an answer.

Richard MacCutchan 23-Feb-16 13:32pm

Don't use Double types for financial values, use integers. After all, you are only counting pennies.

2 solutions

Solution 2

believe me your preaching to the quire, Google is my end all be all.

Posted 24-Feb-16 9:25am

Member 12312671

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Patrice T · Accepted Answer · 2016-02-23T07:36:00

Solution 1

You should learn to use the debugger as soon as possible. Rather than guessing what your code is doing, It is time to see your code executing and ensuring that it does what you expect.

The debugger allow you to follow the execution line by line, inspect variables and you will see that there is a point where it stop doing what you expect.
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
http://docs.oracle.com/javase/7/docs/technotes/tools/windows/jdb.html[^]
https://www.jetbrains.com/idea/help/debugging-your-first-java-application.html[^]

Advice:
Since

Quote:
the number of pennies needs to start at 1

you need to replace

VB.NET

Dim Pennies As Double = 0.1

by

VB.NET

Dim Pennies As Double = 1

You want to

Quote:
and proceed to double each day

you need

VB.NET

Pennies =Pennies * 2

in the loop

If you think

VB.NET

Console.WriteLine("Day " & Counter & " you earned: $" & Pennies * 2)

is the same as

VB.NET

Console.WriteLine("Day " & Counter & " you earned: $" & Pennies)
Pennies =Pennies * 2

, you have a lot of work and reading ahead of you.

Posted 23-Feb-16 7:36am

Patrice T

Updated 23-Feb-16 9:13am

v2

Comments

Member 12312671 23-Feb-16 14:59pm

see when I multiply it by two, day one is still 2. it needs to start at one and double from there as you can see I multiplied pennies by two in this line with the same result in the code I posted.

Console.WriteLine("Day " & Counter & " you earned: $" & Pennies * 2)

Patrice T 23-Feb-16 15:10pm

Multiply the pennies after displaying.

Member 12312671 23-Feb-16 15:21pm

That did it TYVM man :) I appreciate it!

Member 12312671 23-Feb-16 15:27pm

I forgot one more thing how can I get it to total all amounts at the end?

Member 12312671 23-Feb-16 15:28pm

Or rather on each line

Patrice T 23-Feb-16 15:33pm

This is the easiest part, you should be able to sort out this by yourself.
I gave you help, but I don't do your HomeWork.

Member 12312671 23-Feb-16 16:17pm

I'm not asking you to do my homework as you can see I did most of it, there were also other problems that I did. I just want to know how to make an accumulator. Obviously I have to make a variable for it but I don't know where to go from there.

Patrice T 23-Feb-16 16:36pm

Don't want to be hard on you but you should have seen how to accumulate in a variable in your courses.
the homework should match the course you follow.
You should see with you teacher what you missed.

Member 12312671 23-Feb-16 17:20pm

Unfortunately my teacher isn't that reliable I've been playing with it with no success

Patrice T 23-Feb-16 17:29pm

You can't relay on QA to learn programming, it can work only once or twice, but no more.
Can't you ask other student ? or another teacher ?

Member 12312671 23-Feb-16 21:54pm

Not that it pertains to programming but I personally can learn a lot from QA. Not everyone learns the same way, I actually have a high comprehension level. I understand your trying to help me to improve by trying to make me learn the debugger, and believe me I will when I have the time. My degree may be NSA but I do enjoy learning, and I'm having fun with programming regardless of the teacher.

Member 12312671 23-Feb-16 22:19pm

Well I got it working thanks to several different worded google searches on accumulators. Google is love Google is life.

Patrice T 23-Feb-16 23:25pm

Knowing how to use google is a wanted skill.
Google knows almost anything.