...Problem Solving with Computing Homework - WEEK 2 [30 points] This is a review of some of the material from Chapter 2 and lectures from class. No credit for answers that are copies or near verbatim transcripts – please use your own words1 and document sources where appropriate. 1 This will apply to all assignments in this class. Answer the following questions: Chapter 2 1. Short Answers [1 point each, 2 points total] 1. What does a professional programmer usually do first to gain an understanding of a problem? The first thing that a professional programmer usually do first to gain an understanding of a program is to closely relate customer (Interview ) to inquire or gather information about the problem. 2. What two things must you normally specify in a variable declaration? The two things normally specified in a variable declaration are the variable type and identifier. 2. Algorithms / Pseudocode [1 point each, 5 points total] 1. Design an algorithm that prompts the user to enter his or her height and stores the user’s input in a variable named height. Declare height Display “Enter Your Height” Input Height Display “Height” 2. Write assignment statements that perform the following operations with the variables a and b. - Adds 2 to a and stores the result in b. - Subtracts 8 from b and stores the result in a Set b=2+a Set a=b-8 3. Write a pseudocode statement that declares the variable cost so it can hold real numbers. Floating Point-Variable...
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...11108944 Name: ASHWINI KUMAR Roll No. : RE3R02B32 PART- A 1. Ans :- (a) unary and ternary operator Unary operator:- It pecedes an operand . The operand (the value on which the operator operates ) of the unary operator must have arithmetic or pointer type and the result is the value of the argument. Example:- If a=5 then +a means 5 If a=0 then +a means 0. If a=-4 then +a means -4. Ternary operator:- It precedes an operand. The operand of the unary operator must have arithmetic type and the result is the negation of the operand’s value. Example:- If a=5 then –a means -5 If a=0 then –a means 0 If a=-4 then –a means 4. (b) Assignment and equalto operator Assignment operator:- Equal to operator: An assignment operator assigns value In this we put the To a variable. value as it is. Example – Example- a*=5 means a=5*5. Int a; a=5 means a is initialized with 5 if(a==5) { return true; } return false; (c) Expression and statement Expression:- An expression is any valid combination of operators , constants , and variables. Example:- ...
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...Team B Calorie Count Tool PRG/211 May 5, 2014 Team B Calorie Count Tool PROBLEM STATEMENT Team B was asked to develop a program which would calculate the user’s daily intake of calories and measure those calories against the overall calories expended. The core purpose of this program will do two primary functions. First, it will record the user intake of calories as acquired through meals throughout the day. Second, the user will record caloric output associated with physical activity. This information will be calculated together to determine the caloric surplus or deficit for the user. In order for the program to execute accurately, and provide customized results, the user will be required to input personal data to include gender, age, weight, and height. This additional information is essential to determine the user’s default caloric burn rate, otherwise known as the basal metabolic rate (BMR). The BMR and the calories burned as a result of physical activity will be calculated against the intake of calories to determine the overall success for the user. As the program is executed it must: * Record user name, age, height, weight to enable more accurate calculations * Record the users specific caloric values entered for each meal * Record the user activity and caloric burn values for that activity * Calculate the basal metabolic rate (BMR) for the individual * Subtotal the total caloric values for the day * Combine the physical activity and...
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...Week 2 Assignment: Understanding Effective Money Management Assessment A, Part 1: Creating a Personal Financial Statement - Assets | 1 point | Car: Bluebook value $1250.00Cash: $378.00Savings Accounts: $826.00 | Assessment A, Part 2: Creating a Personal Financial Statement - Debts | 1 point | Rent: $750.00Electric/ Gas bill: $131.75Cable/ internet/ Phone bill: $80.42Credit Card: $31.00Cell phone bill: $72.37 | Assessment A, Part 3: Identify Money Management Tool | 1 point | Explain to Monica how the money management tools were identified. | Students should explain how they evaluated various cash management products and services. | Assessment A, Part 4: Creating a Personal Financial Statement – Steps | 1 point | Drag the steps listed on the right into their correct sequences on the left. When done click the Send button | Step 1: I got all my financial stuff together – bills, loans, bank statements, etc. | Step 2: I balance my checkbook. | Step 3: I decided what were my assets and what were my debts. | Step 4: I enter my assets in the program. | Step 5: I enter my debts in the program. | Step 6: The program gave me a Net worth figure at the end. | Assessment B: Creating a Monthly Cash Flow Statement ...
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...ASSIGNMENT - 3 Answers 1 Answer 2 Answer 3 4. For what types of workloads does SJF deliver the same turnaround times as FIFO? ANSWER: - In the above case if the jobs are same in size or the jobs periodically applied (i.e. first shortest job then later second shortest job and continues) then the turnaround time of SJF is same as FIFO. 5. For what types of workloads and quantum lengths does SJF deliver the same response times as RR? ANSWER: - The response time delivered by SJF is equal to the response time of RR but this happens only when all the jobs arrived are at the point when the planning quantum of RR is bigger than the bigger occupation to be administrations in order of increasing size. 6. What happens to response time with SJF as job lengths increase? Can you use the simulator to demonstrate the trend? ANSWER: - If you suppose the length of the job increases then average response time varies (increases).If every job is sorted in increasing job order than the last job response time will be equal to the sum of current job and previous (n-1) jobs. In this way if the size of the job increases the response time will also increases for all larger jobs. 7. What happens to response time with RR as quantum lengths increase? Can you write an equation that gives the worst-case response time, given N jobs? ANSWER: - In the case of RR, the response time increases as the quantum lengths increases. This happens because the waiting time of a process for its turn to...
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...Diagnostic Algebra Assessment Definitions Categories Equality Symbol Misconception Graphing Misconception Definition Concept of a Variable Misconception Equality Symbol Misconception As algebra teachers, we all know how frustrating it can be to teach a particular concept and to have a percentage of our students not get it. We try different approaches and activities but to no avail. These students just do not seem to grasp the concept. Often, we blame the students for not trying hard enough. Worse yet, others blame us for not teaching students well enough. Students often learn the equality symbol misconception when they begin learning mathematics. Rather than understanding that the equal sign indicates equivalence between the expressions on the left side and the right side of an equation, students interpret the equal sign as meaning “do something” or the sign before the answer. This problem is exacerbated by many adults solving problems in the following way: 5 × 4 + 3 = ? 5 × 4 = 20 + 3 = 23 Students may also have difficulty understanding statements like 7 = 3 + 4 or 5 = 5, since these do not involve a problem on the left and an answer on the right. Falkner presented the following problem to 6th grade classes: 8 + 4 = [] + 5 All 145 students gave the answer of 12 or 17. It can be assumed that students got 12 since 8 + 4 = 12. The 17 may be from those who continued the problem: 12 + 5 = 17. Students with this misconception may also have difficulty with the idea that adding...
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...Selection statements Selection is used to select which statements are to be performed next based on a condition being true or false. Relational expressions In the solution of many problems, different actions must be taken depending on the value of the data. The if statement in C I used to implement such s decision structure in its simplest form – that of selecting a statement to be executed only if a condition is satisfied. Syntax: if(condtion) statement executed if condition is true When an executing program encounters the if statement, the condition is evaluated to determine its numerical value, which is then interpreted as either true or false. If the condition evaluates to any non-0 value (positive or negative), the condition is considered as a “true” condition and the statement following the if is executed; otherwise this statement is not executed. Relational Operators In C Relational operator | Meaning | Example | < | Less than | age < 30 | > | Greater than | height > 6.2 | <= | Less than or equal to | taxable <= 200000 | >= | Greater than or equal to | temp >= 98.6 | == | Equal to | grade == 100 | != | Not equal to | number !=250 | In creating relational expressions, the relational operators must be typed exactly as given in the above table. Thus, although the following relational expressions are all valid: age > 40 length <= 50 temp >= 98.6 3 < 4 flag == done day != 5 The following are invalid: length =< 50 ...
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...Ariana Corney Aesa McComb Mina Haw Son Writing assignment #2 When g (0) it is zero because the slope is at zero When it is g (10) it is positive because of the area being colored on the graph. The area under the x-axis is negative, so when you add all of the areas it becomes positive. That brings us to the derivative of g (x), to help us find all of the x-values, which is equal to f(x). Same with the derivative of g (a), it equals f (a), but f (a) is equal to 0. The x values are 2,4,6,8, and 10 when f (0) is equal to f (2), f (4), f (6), f (8), f (10). We determined the increasing/decreasing intervals would be increasing at points where x equals (0,2), (4,6), (8,10) while that g would be decreasing on points where x equals (2,4) and (6,8). As far as finding the extreme values we found that the maximum occurs at when x equals 2, 6, and 10. The minimum occurs at when x equals 0, 4, and 8, while the absolute extreme values are where x equals 2. We determined that g was concaving up when x equals (0,1), (3,5), and (7,9) because the slope of those are increasing throughout the graph. We also determined that g is concaving down when x equals (1,3), (5,7), (9,10) because the slope of those are decreasing down throughout the graph. When the derivative of h is 9, h(x) =g (√x) is equal to f(3)=-2. H(x)= g(√x) so when we need to find the derivative of h(x), we also need to find the derivative of g(√x).The derivative of h(9) then equals the derivative of g(√9) which equals 3. When...
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...Strayer University | Assignment 2 | Cards on my Head | Professor KagenMath 104 | Joshua White | 12/20/2012 | [Type the abstract of the document here. The abstract is typically a short summary of the contents of the document. Type the abstract of the document here. The abstract is typically a short summary of the contents of the document.] | Andy, Carol, Belle and I are playing guess my cards. Each player draws three cards out of a deck and each card has a number between 1 and 9. Each player must place their cards on their heads without looking at your cards. Every other player can see your cards and you cans see the others cards. Every person draws a set of questions to ask of the other players. You use the answer to the questions to gain clues about the cards you have. The objective is to guess what cards you have stuck to your head. I can see Belles, Andy’s, and Carol’s cards. Belle’s cards are 3, 4, and 7. The sum of Belle’s cards equal to 14. Carol has 4, 6, and 8. The sum of her cards equal to 18. Andy has 1, 3, and 7. His cards equal to 11. I ask Andy if he can see 2 or more player whose cards sum to the same value? His reply was “yes”. That tells me that the sum of my cards come up to either 14 or 18. I can see Belle has a total of 14 and Carol has a total of 18. Andy can’t see his cards. I than ask Belle of the 5 different odd #’s how many do you see? Belle tells me that she can see all of them. Andy has a 1, 3, and 7, which are all odd numbers...
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...TR PT1420 5/13/14 Unit Assignment 4 l. What is the general fom1at of the statement used to code decisions in an application? A power full asset of the computer is its ability to make decisions and to take alternate course of action based on the outcome. 2. What is a Boolean expression? a logical statement that is either TRUE or FALSE. 3 . Explain the purpose of comparison operators and logical operators. The purpose of a comparison operator is to test some kind of relationship between two entities examples are >, <, ==, !=, etc 4. How does a comparison performed on numeric data differ from a comparison performed on string data? There are commonly used interchangeably, and the distinction between them is a small one. Comparison to" should be used when comparison is made between specific people, things, or other instances. 5. How does Visual Basic compare the Text property of a text box? When you compare the Text property of a text box with another value the Text property behaves like a variant. Visual Basic compares one text box to another as strings and compares a text box to a numeric variable or constant with a numeric compare. You can force a numeric comparison on a Text property by using the Val function. 6 . Why would it be useful to include the ToUpper method in a comparison? When comparing strings, the case of the characters is important. An uppercase “Y” does not compare equal to a lowercase “y”. Since the user may type a name or word in either...
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...Chapter 2 Review Questions 1-20 (20 POINTS) 1. What does a declaration provide for a variable? o a. a name o b. a data type o c. both of the above o d. none of the above 2. A variable's data type describes all of the following except __________. a. what values the variable can hold b. how the variable is stored in memory c. what operations can be performed with the variable d. the scope of the variable 3. The value stored in an uninitialized variable is __________. a. garbage b. null c. compost d. its identifier 4. The value 3 is a __________. a. numeric variable b. numeric constant c. string variable d. string constant 5. The assignment operator _________. a. is a binary operator b. has left-to-right associativity c. is most often represented by a colon d. two of the above 6. Which of the following is true about arithmetic precedence? a. Multiplication has a higher precedence than division. b. Operators with the lowest precedence always have left-to-right associativity. c. Division has higher precedence than subtraction. d. all of the above 7. Which of the following is a term used as a synonym for “module” in any programming language? a. method b. procedure c. both of these d. none of these 8. Which of the following is a reason to use modularization? a. Modularization avoids abstraction. b. Modularization reduces overhead. c. Modularization allows you to more easily reuse your work. d. Modularization eliminates the...
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...SAS 认证考试样题 1.A raw data file is listed below. 1---+----10---+----20---+--son Frank 01/31/89 daughter June 12-25-87 brother Samuel 01/17/51 The following program is submitted using this file as input: data work.family; infile 'file-specification'; run; Which INPUT statement correctly reads the values for the variable Birthdate as SAS date values? a. input b. input c. input d. input relation relation relation relation $ $ $ $ first_name first_name first_name first_name $ $ $ $ birthdate birthdate birthdate birthdate date9.; mmddyy8.; : date9.; : mmddyy8.; Correct answer: d An informat is used to translate the calendar date to a SAS date value. The date values are in the form of two-digit values for month-day-year, so the MMDDYY8. informat must be used. When using an informat with list input, the colon-format modifier is required to correctly associate the informat with the variable name. You can learn about • • informats in Reading Date and Time Values the colon-format modifier in Reading Free-Format Data. 2.A raw data file is listed below. 1---+----10---+----20---+--Jose,47,210 Sue,,108 The following SAS program is submitted using the raw data file above as input: data employeestats; input name $ age weight; run; The following output is desired: name age weight Jose 47 210 Sue . 108 Which of the following INFILE statements completes the program and accesses the data correctly? a. infile 'file-specification' pad; b. infile 'file-specification'...
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...Creating Data Sets 1. You have a text file called scores.txt containing information on gender (M or F) and four test scores (English, history, math, and science). Each data value is separated from the others by one or more blanks. a. Write a DATA step to read in these values. Choose your own variable names. Be sure that the value for Gender is stored in 1 byte and that the four test scores are numeric. b. Include an assignment statement computing the average of the four test scores. c. Write the appropriate PROC PRINT statements to list the contents of this data set. 2. You are given a CSV file called political.csv containing state, political party, and age. a. Write a SAS program to create a temporary SAS data set called Vote. Use the variable names State, Party, and Age. Age should be stored as a numeric variable; State and Party should be stored as character variables. b. Include a procedure to list the observations in this data set. c. Include a procedure to compute frequencies for Party. 3. You are given a text file where dollar signs were used as delimiters. To indicate missing values, two dollars signs were entered. Values in this file represent last name, employee number, and annual salary. d. Using this data file as input, create a temporary SAS data set called Company with the variables LastName (character), EmpNo (character), and Salary (numeric). e. Write the appropriate PROC PRINT statements to...
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...STUDY HABITS OF SECOND YEAR BS-AVTECH STUDENTS OF PATTS COLLEGE OF AERONAUTICS S.Y 2013-2014 An Undergraduate Research Presented to The Languages Department of PATTS College of Aeronautics In Partial Fulfillment of the Requirements for the course ENGL 211 – Technical Report Writing By Guevarra, Giorgio Martin C Guevarra, Lorenzo Miguel Jang, Jose, Yosalina, Leo Xander March 2014 ACKNOWLEDGEMENT The researcher would like to express our thanks to the lord. Our God for his guidance towards everything we do In life, including this study that we had made, and for being an inspiration for us all to do our best in life. We give our thanks to Ms. Karen M. Millano, our adviser for ENGL 211, for carefully and patiently guiding us so that we may finish the thesis research, and for supporting us and believing in us, that we can accomplish our task finishing the thesis. To the respondents of this study, we express our gratitude because without them, this thesis research would not have been completed, we thank them for allowing us to conduct a survey during their spare time, and their patience and integrity in answering the survey. To our parents, for their support and everlasting patience and understanding for us. And lastly to our classmates, since they have been with us since the beginning of the semester and they had been our companions in everything we do for the subject ENGL 211. ABSTRACT STUDY HABITS OF...
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...SCHOOL OF ENGINEERING YEAR 3 MECHATRONICS ASSIGNMENT LAB REPORT Reading an Analogue Voltage from a Potentiometer to turn a Motor on and off with reading of 40 Assignment 2 Owais Jahanzeb BENG Mechanical Engineering with buissness Lecturer: Dr. Tom Shenton Aim & Objectives The aim of this lab is to develop a functioning program for the PICDEM board to read an analogue signal from a potentiometer and turning a motor on or off if the signal exceeds a certain limit. The program should depict the function that it should turn the motor ON and OFF if the potentiometer reading is less than or equal to 40. The practical uses of such program can be seen in automotive , injection moulding machines, wood processing machines, modern temperature controlled plants, speed control torque operations. Developing Program 1 Figure 1. The schematic circuit & PICDEM board configuration for Program Figure 1. The schematic circuit & PICDEM board configuration for Program The objective of program is to read the correspondent voltage analogous to the potentiometer position and switch the motor on if the reading is over 40 and switch it off if the reading is less than or equal to 40, the value can be adjusted by twisting the screw clockwise and anticlockwise. The program works by implementing the following code. PIC program for Test of potentiometer with value less equal to 40 with comments: include <p16f917.inc> extern DisplayDigit1, DisplayDigit2...
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