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computer science
microsoft visual c# introduction

Questions and Answers of Microsoft Visual C# Introduction

The expression 4 > 3 && 7 >= 4 evaluates to _____________________ . a. True b. False
Which of the following conditions evaluates to true when the letter variable contains the letter Z in either uppercase or lowercase? a. if (letter = 'Z' || letter = 'z') b. if (letter ==
Which of the following is a valid if clause? (The average variable has the double data type.) a. if (average > 70.5 && average < 80.5) b. if (average < 70.5 &&
If an if statement’s true path contains the statement double avg = 0.0;, where can the avg variable be used? a. In any instruction after the declaration statement in the entire program b.
Correct the errors in the lines of code shown in Figure 4-34. (The code contains eight errors.)
Complete the C++ instructions column in Figure 4-33. IPO chart information C++ instructions Input number of pets number of owners int pets = 0; int owners = 0; Processing none Output number of
Complete the C++ instructions column in Figure 4-32. IPO chart information C++ instructions Input quantity sold item cost int quantity = 0; double cost = 0.0; double sellPrice item selling
Complete the C++ instructions column in Figure 4-31. IPO chart information C++ instructions Input quantity total cost int quantity = 0; double total - 0.0; Processing none Output Cost per item
Which of the following is a valid comment in C++? a. **This is a comment b. @/This is a comment c. /This is a comment d. None of the above
Which of the following is equivalent to the rate = rate / 100; statement? a. rate =/ 100; b. rate /= 100: c. rate / = 100; d. rate /= 100;
Which of the following tells the compiler to merge the code contained in the iostream file with the current file’s code? a. #include iostream; b. #include c. #include ; d.
Which of the following statements advances the cursor to the next line on the computer screen? a. cout << endl; b. cout << endline; c. cout << newline; d.None of
Which of the following explicitly converts the contents of an int variable named quantity to the double data type? a. castToDouble(quantity) b. explicit_cast (quantity) c. static_cast
Which of the following assigns the letter T to a char variable named insured? a. insured = 'T'; b. insured = "T": c. insured = "T"; d. insured = 'T':
The num1 and num2 variables have the int data type and contain the numbers 13 and 5, respectively. The answer variable has the double data type. Which of the following statements will require an
If the payRate variable has the double data type, which of the following statements will require an explicit type conversion to evaluate correctly? a. payRate = 25; b. payRate = payRate *
Which of the following sends keyboard input to a variable named payRate? a. cin >> payRate; b. cin << payRate; c. cin <> payRate; d. cin > payRate;
Which of the following prompts the user to enter an hourly pay rate? a. cout >> "Pay rate per hour? "; b. cout << "Pay rate per hour? "; c. cout >> "Pay rate per
Archie wants a program that calculates and displays a team’s final score in a football game, given the numbers of the team’s field goals, touchdowns, one-point conversions, two-point conversions,
Builders Inc. wants a program that allows its salesclerks to enter the diameter of a circle and the price of railing material per foot. The program should calculate and display the total price of the
Michael wants a program that calculates and displays the percentage of the total points he contributed to his basketball team’s final score. Michael will provide the number of twopoint baskets, the
Gabrielle receives 52 paychecks each year. She always deposits a specific percentage of her gross pay into her savings account. She also receives a bonus check, which is always more than $250, at the
Cranston Berries sells three types of berries: strawberries, blueberries, and raspberries. Sales have been booming this year and are expected to increase next year. The sales manager wants a program
Juan wants a program that calculates and displays the number of miles per gallon he drove his car on a recent trip. When he started the trip, the car’s gas tank was full and its odometer read 5500.
Correct the C++ instructions shown in Figure 3-26. IPO chart information C++ instructions Input original price discount rate (10%) double original = 0.0; double DISC_RATE = 10%; %3D %3D
Aaron Lakely is going to the grocery store to buy some bananas and apples, both of which are sold by the pound. He wants a program that calculates and displays the total cost of his order, including
If you use a real number to initialize an int variable, the real number will be _____________________ before it is stored in the variable. a. Demoted b. Promoted c. Reduced d.
If memory location’s data type is char, how will it store the character 6? a. 01110110 b. 00110111 c. 00110110 d. None of the above
If a memory location’s data type is int, how will it store the number 54? a. 01110110 b. 00110110 c. 00110111 d. None of the above
Which of the following declares a char named constant called TOP_GRADE? a. Const char TOP_GRADE = 'A'; b. Const char TOP_GRADE = "A"; c. Const char TOP_GRADE; d. Both a and c
Which of the following is a valid name for a variable? a. Amount-sold b. AmountSold c. 1stQtrAmountSold d. Both b and c
Which of the following creates a variable that can store real numbers? a. Double totalDue = '0.0'; b. Double totalDue = 0.0; c. Double totalDue = "0.0"; d. TotalDue = 0.0;
The declaration statement for a named constant requires _____________________ . a. A data type b. A name c. A value d. All of the above
A C++ statement must end with a _____________________ . a. Colon b. Comma c. Period d. Semicolon
Which of the following declares a variable that can store an integer? a. Int quantity = 0; b. Integer quantity = 0; c. Quantity = 0; d. Int quantity = 0;
The rules you must follow when using a programming language are called its _____________________ . a. Guidelines b. Procedures c. Regulations d. Syntax
The algorithm shown in Figure 2-42 should calculate and display the total amount due, but it is not working correctly. Correct the algorithm, and then desk-check it using 20, $0.25, and .045 (the
The payroll clerk at Nosaki Company wants a program that calculates and displays an employee’s gross pay, federal withholding tax (FWT), Social Security and Medicare (FICA) tax, state tax, and net
Sam wants a program that displays the number of seconds it takes for a baseball to travel a specified distance at a specified speed. The distance will be given in feet, and the speed will be given in
The manager of a local restaurant wants a program that displays the total cost for running a party in the restaurant’s banquet room. The restaurant charges a base fee for renting the room. It also
Carlos receives 24 paychecks each year. Each paycheck, he contributes a specific percentage of his gross pay to his retirement plan at work. His employer also contributes to his retirement plan, but
Treyson Liu has just purchased his first home. His local flooring store is having a great sale, and he would like to replace the tile floor in his rectangular den with carpeting. He wants a program
Each time Tania visits the dentist, her dental insurance requires her to pay a $20 co-pay and 15% of the remaining charge. She wants a program that displays the total amount she needs to pay, as well
The annual property tax in Richardson County is $1.75 for each $100 of a property’s assessed value. The county clerk wants an application that will display the property tax after he enters the
An airplane has both first-class and coach seats. The first-class tickets cost more than the coach tickets. The airline wants a program that calculates and displays the total amount of money the
Norbert Catering is famous for its roast beef sandwiches. The store’s owner wants a program that he can use to estimate the number of pounds of roast beef a customer should purchase, given the
All of the employees at Merks Sales are paid based on an annual salary rather than an hourly wage. However, some employees are paid weekly while others are paid every other week (biweekly). Weekly
Modify the IPO chart shown earlier in Figure 2-22 so that it also displays the cost per mile driven. Desk-check the algorithm using 324, 17, and $3.10 as the miles driven, gallons used, and cost per
A desk-check table should contain _____________________ . a. One column for each input item b. One column for each output item c. One column for each processing item d. All of the
The oval in a flowchart is called the _____________________ symbol. a. Calculation b. Input/output c. Process d. Start/stop
The short English statements that represent an algorithm are called _____________________ . a. Flow diagrams b. IPO charts c. Pseudocharts d. Pseudocode
Most algorithms follow the format of _____________________ . a. Entering the input items; then displaying, printing, or storing the input items; and then processing the output items b.
The calculation instructions in an algorithm should state _____________________ . a. Only what is to be calculated b. Only how to calculate something c. Both what is to be calculated
A problem’s _____________________ will answer the question What information will the computer need to know to display, print, or store the output items? a. Input b. Output c.
A problem’s _____________________ will answer the question What does the user want to see displayed on the screen, printed on the printer, or stored in a file? a. Input b. Output c.
Programmers refer to the items needed to reach a problem’s goal as the _____________________ . a. Input b. Output c. Processing d. Purpose
Programmers refer to the goal of solving a problem as the _____________________ . a. Input b. Output c. Processing d. Purpose
Which of the following is the first step in the problem-solving process? a. Plan the algorithm b. Analyze the problem c. Desk-check the algorithm d. Code the algorithm into a
The algorithm in Figure 1-17 does not get Robin the Robot through the maze. Correct the algorithm. Robin should end up here 1. walk into the maze 2. turn left 90 degrees 3. repeat until (you
The algorithm in Figure 1-16 should get Robin the Robot seated in the chair, but it does not work correctly. Correct the algorithm. 4 steps 3 steps 3 steps 1. repeat (3 times) wale forward one
Store A is having a BoGoHo (Buy One, Get One Half Off) sale. Store B is not having a sale, but sometimes its prices are much lower than at Store A. Write an algorithm that determines whether it’s
Create an algorithm that tells someone how to evaluate the following expression: 7 * 5 – 20 / 2 + 4 * 2. The / operator means division, and the * operator means multiplication. (As you may remember
All employees at Kranston Sports Inc. are paid based on an annual salary rather than an hourly wage. However, some employees are paid weekly, while others are paid every other week (biweekly).
The algorithm shown in Figure 1-14 should calculate and print the gross pay for five workers; however, some of the instructions are missing from the algorithm. Complete the algorithm. If an employee
Harold is standing in front of a flowerbed that contains six flowers, as illustrated in Figure 1-13. Create an algorithm that directs Harold to pick the flowers as he walks to the other side of the
Using only the instructions shown in Figure 1-12, write two versions of an algorithm that displays the total amount each customer owes for concert tickets. Be sure to indent the instructions
You have just purchased a new personal computer system. Before putting the system components together, you read the instruction booklet that came with the system. The booklet contains a list of the
Using only the instructions shown in Figure 1-10, create an algorithm that displays the average of four numbers. Be sure to indent the instructions appropriately. calculate the average by
Which control structure would an algorithm use to determine whether a customer is entitled to a senior discount? a. Repetition b. Selection c. Both repetition and selection
A company pays a 3% annual bonus to employees who have been with the company more than 5 years; other employees receive a 1% bonus. Which control structure(s) would an algorithm use to calculate
Which control structure would an algorithm use to calculate a 5% commission for each of a company’s salespeople? a. Repetition b. Selectionc. Both repetition and selection
Which control structure would an algorithm use to determine whether a credit card holder is over his credit limit? a. Repetition b. Selection c. Both repetition and selection
The instruction “If it’s dark, turn the light on” is an example of which structure? a. Control b. Repetition c. Selection d. Sequence
The instruction “Brush your hair 5 times” is an example of which structure? a. Control b. Repetition c. Selectiond. Sequence
The set of step-by-step instructions that solve a problem is called _____________________ . a. An algorithm b. A list c. A pland. A sequential structure
The set of instructions for adding together two numbers is an example of the _____________________ structure. a. Control b. Repetition c. Selectiond. Sequence
Which of the following control structures is used in every program? a. Repetition b. Selection c. Sequenced. Switching
Which of the following is not a programming control structure? a. Repetition b. Selection c. Sequence d. Sorting

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