C programming session 07
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This document provides instructions and content for practice questions from chapters 4 and 5. It describes modifying existing programs to allow user input of strings and reports on string length and comparison. It also describes a method to reduce program size by replacing indentation spaces with numbers and writing a program to perform this compression. Finally, it describes modifications needed for a sales data analysis program to allow command line specification of different report types and includes sample function code.
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PT1420 Modules in Flowchart and Visual Basic .docx
PT1420 Modules in Flowchart and Visual Basic .docxamrit47 PT1420: Modules in Flowchart and Visual Basic
Page 1
This lab requires you to think about the steps that take place in a program by designing a
flowchart. Use an application such as Raptor or Visio. Read the following program prior to
completing the lab.
Data Communications Corp wants a small program that will calculate the cost of UTP it
installs for their clients. Write a program that will ask the user to input the name of the
client and the number of feet of cable installed. The program should then calculate and
display a final bill. Cost per foot of UTP is .21 cents. Be sure to add on a tax of 6%. Final
bill should include the total cost and client name. Be sure to add modules to your
program.
Step 1: In main, create a module called declareVariables() that will set your variables to 0 or “ “.
Click the Call Symbol on the Left and Drag and Drop to the flow lines between Start and Stop.
Double click on the Call Symbol and type the name of your first module. For example, type
declareVariables in the Enter Call box. Do not put the ( ) when using Raptor. Click the Done
button. A new box will pop up that will ask you to create a new tab. Click Yes. A new tab will be
created for your new method. Notice the new Tab called declareVariables.
Watch the Help Video 4-2 to see how to add modules and initialize variables in Raptor and
Visio.
PT1420: Modules in Flowchart and Visual Basic
Page 2
Step 2: Continue this process to add your additional methods, which are inputData(),
calcCosts(), and displayBill(). Main should look like this:
In Raptor
In Visio
Start
End
declareVariables()
inputData()
calcCosts()
displayBill()
Step 3: Click on the inputData module and add the necessary code to input clientName and
feetUTP. Watch the Help Video 4-2 to see how to input variables in Raptor and Visio.
Step 4: Click the calcCosts module and add the necessary code to compute calculations. Watch
the Help Video 4-2 to see how to add calculations in Raptor and Visio.
Step 5: Click the displayBill module and add the necessary code to display the clientName and
totalCost to the screen. Watch the Help Video 4-2 to see how to display variables in Raptor and
Visio.
PT1420: Modules in Flowchart and Visual Basic
Page 3
Step 6: If you are using Raptor, you can run your program. Click Run, then Execute to Finish. For
your input, enter a client name such as Bumpco Inc and ...
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IBM has substantial operations in many countries, including the United States, Canada, and Germany. Go to finance.yahoo.com/q?s=ibm.
1. Click on Historical Prices. (Or apply this exercise to a different MNC.) Set the date range so that you can obtain quarterly values of the U.S. stock index for the last 20 quarters. Insert the quarterly data on a spreadsheet. Compute the percentage change in IBM’s stock price for each quarter. Next go to finance.yahoo.com/stock-center/ and click (under U.S.) on S&P Composite 1500 Index, which represents the U.S. stock market index, so that you can derive the quarterly percentage change in the U.S. stock index over the last 20 quarters. Then run a regression analysis with IBM’s quarterly return (percentage change in stock price) as the dependent variable and the quarterly percentage change in the U.S. stock market’s value as the independent variable. (Appendix C explains how Excel can be used to run regression analysis.) The slope coefficient serves as an estimate of the sensitivity of IBM’s value to the U.S. market returns. Also, check the fit of the relationship based on the R-squared statistic.
2. Go to finance.yahoo.com/stock-center/ and click (under “Europe”) on DAX, which represents the German stock market index. Repeat the process described in exercise 1 so that you can assess IBM’s sensitivity to the German stock market. Compare the slope coefficient between the two analyses. Is IBM’s value more sensitive to the U.S. market or the German market? Does the U.S. market or the German market explain a higher proportion of the variation in IBM’s returns (check the R-squared statistic)? Offer an explanation of your results.
Lab 5 Database Security
Use the script from week 1 for the week 5 lab.
1. Create four new users
a. The first user will have full rights to the database
b. The second user grant access to the Client’s table and allow them the rights to INSERT data into the clients table
c. The third user grant rights to create user logins and reset passwords
d. The fourth user grant column rights to the Course_Activity table allow access to the Course Code and Grade column. Allow user to UPDATE a maximum of 5 times per hour.
2. Login with each user to demonstrate the rights you have given them
a. User 1 login and create a VIEW for user 2 that just displays the Client table
b. User 2 login and add 3 more clients to the Clients table
c. User 3 login create two new users
d. User 4 login and UPDATE two new entries for Course Code and Grade Column for Client 1 and 2
e. For each user run the Show Privileges command to show correct rights and permissions have been applied
3. Show Log Files: For each user show log files (since we do not have MySQL Enterprise we cannot use the Audit function but as a substitute we can use the built-in log file function)
4. Create a Stored Procedure with User ...
Ppt lesson 06
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Ppt lesson 06
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Ppt lesson 06
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C programming session 07
- 1. In this session, you will do the practice questions of Chapter 4 and Chapter 5. Objectives
- 2. Modify the program that determines the length of a string so that it allows input of the string from the user and displays its length. (Maximum size of the input string is 80). Modify the string comparison program so that it allows input of strings and reports on whether they are the same or not. Chapter 4
- 3. 3. A program can be easily understood if it is indented properly. This has one drawback, in terms of the size of the program on the disk. One simple way of cutting down the size significantly is described here. Assume the following piece of code: 123456789012345678901234567890 (indicates column) printf("This is the last straw"); The 15 blanks at the start of the line can be replaced by the number 15 so that the line of code is now: 123456789012345678901234567890 (indicates column) 15printf("This is the last straw"); Note that a saving of 13 bytes (15 - 2) has been accomplished at one shot. Chapter 4 (Contd.)
- 4. Write a program, which takes in a line of code from the user (maximum length of 80 characters) and prints out the condensed string (with the number of spaces occupying the first two characters in the condensed string). Chapter 4 (Contd.)
- 5. 1. Alcatel Automatics is a company known for its marketing success. This success has been largely due to its superb data analysis programs. The product manager wants some modifications to the existing programs. When running the program, he should be able to specify any of the following with the run command itself: %s: for displaying the product sales by each salesman as a percentage of the total salesman sales. %p: for displaying the product sales by each salesman as a percentage of the total product sales. %i: for displaying the product sales as an index of total sales of all products Chapter 5
- 6. He should also be shown some help message to assist him in case he forgets what to specify with the command and should then be able to give the command again. Since the calculations will be coded in separate functions, which are stored together in one file called func.c , separate from the main() function. The function available in this file are: intdat() : Displays the data as an index of total sales. proddata() : Displays the data as a percentage of total product sales. calcprodtot() : Calculates the salesman-wise totals. Chapter 5 (Contd.)
- 7. The contents of func.c are as follows: Chapter 5 (Contd.)
Editor's Notes
- #2: Begin the session by explaining the objectives of the session.