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Questions, exercises, problems, etc. that support this chapter in the "Programming Fundamentals - A Modular Structured Approach using C++" collection/textbook.

Learning objectives

With 100% accuracy during a: memory building activity, exercises, lab assignment, problems, or timed quiz/exam; the student is expected to:

  1. Define the terms on the definitions as listed in the modules associated with this chapter.
  2. Understand basic data types and how operators manipulate data.
  3. Given pseudocode and test data documents, write the C++ code for a program

Memory building activities

Link to: MBA 03

Exercises

    Answer the following statements as either true or false:

  1. A data type defines a set of values and the set of operations that can be applied on those values.
  2. Reserved or key words can be used as identifier names.
  3. The concept of precedence says that some operators (like multiplication and division) are to be executed before other operators (like addition and subtraction).
  4. An operator that needs two operands, will promote one of the operands as needed to make both operands be of the same data type.
  5. Parentheses change the precedence of operators.

    Answers:

  1. true
  2. false
  3. true
  4. true
  5. false – Parentheses change the order of evaluation in an expression.
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Miscellaneous items

Link to: Manipulation of Data Part 1

Lab assignment

Creating a folder or sub-folder for chapter 03 files

Depending on your compiler/IDE, you should decide where to download and store source code files for processing. Prudence dictates that you create these folders as needed prior to downloading source code files. A suggested sub-folder for the Bloodshed Dev-C++ 5 compiler/IDE might be named:

  • Chapter_03 within the folder named: Cpp_Source_Code_Files

If you have not done so, please create the folder(s) and/or sub-folder(s) as appropriate.

Download the lab file(s)

Download and store the following file(s) to your storage device in the appropriate folder(s). You may need to right click on the link and select "Save Target As" in order to download the file.

Download from Connexions: Solution_Lab_03_Pseudocode.txt

Download from Connexions: Solution_Lab_03_Test_Data.txt

Detailed lab instructions

Read and follow the directions below carefully, and perform the steps in the order listed.

  • Navigate to your sub-folder: Chapter_03 and open and study the two files.
  • We have learned that a fundamental concept of interaction with computers is to divide the problem/task into three parts – input, processing and output.  This problem is simple and we will use the IPO (input – processing – output) approach again.  However this time we are going to think about it backwards.  

 

  • What output do I want displayed? 
  • Number of gallons of paint
  • Total cost of the paint

 

  • Thus, what calculations do I need to make?
  • Total cost of the paint is the Number of gallons needed times price per gallon
  • Number of gallons needed is the Total area to be covered (let’s use square feet) divided by the coverage per gallon of paint (Note: you must round up to the next full gallon of paint.)
  • Total area to be covered is the Length times height times 2 added to the width times height times 2

 

  • Which leads us to, what data do I need as input?
  • Price of a gallon of paint
  • Number of square feet that a gallon will cover
  • Length of the house
  • Width of the house
  • Height of the house

 

  • You can see that by working the logic backwards, we can start to completely see what the program must do.  We need to enter some data (input), do some calculations (process) and display the results (output).
  • Copy into your sub-folder: Chapter_03 one of the source code listings that we have used (we suggest the Lab 01 source code) and rename the copy to: Lab_03.cpp
  • Modify the code to follow the Solution_Lab_03_Pseudocode.txt file.
  • I am just going to give you the line of code for rounding up to the next whole gallon of paint (See the “Data Type Conversions” module within Chapter 3 of the Connexions materials. Do you understand why it works?).
  • total_gal_paint = total_area / coverage_gal_paint + 0.9999;
  • Build (compile and run) your program. You have successfully written this program when it runs with your test data and gives the predicted results.
  • After you have successfully written this program, if you are taking this course for college credit, follow the instructions from your professor/instructor for submitting it for grading.

Problems

Problem 03a – instructions

Write the C++ code to do the following pseudocode example.

Pseudocode

Prompt the user for his monthly income. Get the users monthly income.Multiply the monthly income by 12. Display the annual income.Pause the program so the user can see the answer. (HINT: You may call a function.)

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Questions & Answers

An investment account was opened with an initial deposit of $9,600 and earns 7.4% interest, compounded continuously. How much will the account be worth after 15 years?
Kala Reply
lim x to infinity e^1-e^-1/log(1+x)
given eccentricity and a point find the equiation
Moses Reply
12, 17, 22.... 25th term
Alexandra Reply
12, 17, 22.... 25th term
Akash
College algebra is really hard?
Shirleen Reply
Absolutely, for me. My problems with math started in First grade...involving a nun Sister Anastasia, bad vision, talking & getting expelled from Catholic school. When it comes to math I just can't focus and all I can hear is our family silverware banging and clanging on the pink Formica table.
Carole
find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
I know this work
salma
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
I rally confuse this number And equations too I need exactly help
salma
But this is not salma it's Faiza live in lousvile Ky I garbage this so I am going collage with JCTC that the of the collage thank you my friends
salma
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
hi
salma
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
Jeannette has $5 and $10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
August Reply
What is the expressiin for seven less than four times the number of nickels
Leonardo Reply
How do i figure this problem out.
how do you translate this in Algebraic Expressions
linda Reply
why surface tension is zero at critical temperature
Shanjida
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
s.
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
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Source:  OpenStax, Programming fundamentals - a modular structured approach using c++. OpenStax CNX. Jan 10, 2013 Download for free at http://cnx.org/content/col10621/1.22
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