Computer Chapter 4 Class 7 Question Answer

[Reney Shammo]

Getanswers, questions, notes, textbook solutions, extras, pdf, mcqs for Computer chapter 4 Introduction to Loops of class 10 (HSLC/Madhyamik) for students studying under the Board of Secondary Education, Assam (SEBA). These notes/answers, however, should only be used for references and modifications/changes can be made wherever possible.

In programming languages, loops provide an efficient way to perform repetitive tasks. Loops are essential constructs for repeated execution of a set of statements in a program. They simplify the code and make it more readable and manageable, especially when dealing with tasks that need to be performed multiple times.

There are three main types of loops in C programming: while, do-while, and for. Each loop has its own unique syntax and use case, but all of them function by executing statements repeatedly based on a specific condition. A loop will continue to run as long as the condition is true, and it will terminate when the condition becomes false.

Loops can be used in various scenarios, such as running a fixed number of times or running based on user input. They enable developers to create dynamic and efficient programs that can handle complex tasks with minimal code.

Answer: We use a loop in a C program to perform a task many times efficiently. There are different types of loops that we can use in C programming. By using loops, we can write interesting programs that can perform repetitive tasks quickly and easily.

We can put more than one statement within each portion of the for loop. For example, in the initialization expression, we can have multiple statements separated by commas. Similarly, in the body of the loop, we can have multiple statements enclosed within curly braces.

This course will teach students to solve problems by designing algorithms and building them into standalone computer applications. Experience will be acquired through the completion of projects in a high-level programming language. This course is intended for computer science majors but is suitable for students of other scientific disciplines.

In this class you will be introduced to the field of computer science. Specifically, you will learn how to design and write computer programs in the Java programming language. You will learn the object-oriented paradigm (OOP) and how to model and solve problems using OOP.

You will learn how to apply principles from the fundamentals of computer science using algorithms, data structures, the theory of computing, and the object-oriented paradigm to solve real world problems. You will learn how to decompose a large problem into modules and apply the concepts learned in class to solve programming assignments.

Using the basics of the Object-Oriented Paradigm you will learn how it can be used to model a real-life project such as a Point of Sale application, a calculator or phone book application. You will be exposed to solving software problems using application programming interfaces (API) in Java. You will also be exposed to the fundamentals of processing in Java.

Students with extensive programming experience would need to take a test-out exam to take CSCI.UA.0102 Familiarity with basic concepts of programming in some programming language is required (variables, expressions, assignment statements, control statements and basic input output).

You are highly encouraged to visit the instructor during office hours without notice. Prepare for office hours by coming up with focused and targeted questions. In case there is a line of students waiting, the instructor will limit the meeting to a maximum of 5 minutes per student. You are also encouraged to meet with tutors. The schedule of the tutors will be uploaded on Brightspace and I will be sending emails about the schedule, separately.

HW Submission: You will be asked to send your assignments via Brightspace. While you send your files (source codes, zip files, etc.), please use appropriate file names. For every 24 hours that an assignment is late, we will apply a 10% penalty on the grade, up to a maximum penalty of 30%. After 72 hours, we will no longer accept the assignment.

Basic requirements for an effective computer science class include reading chapters prior to the lecture. You should be proactive and look for the corresponding chapters of the topics we are covering in class.

You will need to attend every class. You will be asked randomly to answer questions and solve problems on your computer where you will demonstrate your solution to the whole class. You will be required to complete the in-class practice and spend a substantial amount of time in doing your homework and the programming assignments.

Instructors: Prof. L. Keliher, Dunn 223, Office hours: 2-3pm Wednesday and 2-3pm Friday Prof. R. Rosebrugh, Dunn 203, Office hours: 10am-noon Thursday

Solutions to Java questions on Lab TestHomework ListExtra Challenge ProblemsCryptography PowerPoint Slides

General InformationSection A meets MWF at 9:30 in Dunn 108; Section B meets MWF at 10:30 in Avard Dixon G12; the text-book is \emphInvitation to Computer Science, Third Edition: Java Version,by G. Schneider and Judith Gersting, and we will also be using the Lab Manual. At the rate of about one chapterper week, we will cover approximately Chapters 1 to 5 (before the Midterm Test), 8, 10, 11, 15 and possibly parts of other chapters.There will be assigned three hour labs held in the PC Lab in Dunn 102. Labs start the week of September 11. There will be homework assigned from the text from which quiz problems will be drawn. One in-class Mid-term Test will be held on October 13.The Lab Test will be held during labs on Nov. 20 to 23.

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All pupils participating in the SSLNwere asked to complete a questionnaire which focused on factorsthat are likely to affect learning, such as pupil attitudes andexperiences in class. It should be noted that: 'don't know'responses were removed prior to analysis unless otherwise stated;and where 'agreed' is used this refers to pupils who respondedeither 'agree a lot' or 'agree a little'.

Pupils were asked how often they participated in a range ofactivities in their class. Across all stages, the activities inwhich the highest percentage of pupils reported they participatedvery often were 'listen to the teacher talk to the class about atopic' (64, 68 and 66 per cent in P4, P7 and S2 respectively) and'work on your own' (58, 56 and 59 per cent in P4, P7 and S2). Ahigh percentage of pupils in P7 (64 per cent) also reported thatthey 'discussed what they were learning' very often.

Pupils were also asked about their teachers' practices. The mostcommonly reported teaching practices being undertaken very oftenwere 'tell you what you are going to learn before you start' (82,89 and 76 per cent in P4, P7 and S2 respectively) and 'encourageyou to work hard' (68, 85 and 65 per cent in P4, P7 and S2respectively). Over three quarters of P7 pupils reported that theirteacher helps them to understand how they can do better very often.Similar proportions of P4 and S2 pupils reported that teachers gotoo slowly as too fast - around 11 per cent did this very often ineach case in P4 and around 14 per cent in S2. In P7, almost doublethe proportion of pupils reported teachers going through work tooslowly (13 per cent) than too fast (seven per cent).

Pupils were also asked how often someone in school talked withthem about their learning, Chart 4.1 illustrates the results.Around a third of pupils in the primary stages reported that theyreceived feedback on performance and improvement very often, butthis reduced to a fifth in S2.

Pupils were asked a series of questions about their attitudetowards learning in general, including how much they enjoy it, howuseful they think it is, and whether they think they are good atlearning. Chart 4.2 illustrates the answers to these threequestions.

Enjoyment of learning was high throughout the survey stages,though the strength of this agreement reduced slightly at S2. Theproportion of pupils reporting that they usually did well remainedsteady, with over 95 per cent of pupils at each stage agreeingeither a lot or a little. Sixty per cent of pupils in P4, 64 percent in P7 and 37 per cent of S2 pupils strongly agreed that whatthey are learning in school is useful to them outside of school.This rises to over 90 per cent for both primary and 80 per cent forS2 stages when including pupils who also agreed a little.

Almost all pupils at all stages agreed with the statements 'Iwant to do well in my learning' (97 per cent in P4 and S2 and 98per cent in P7) and 'I am interested in learning about differentthings' (97 per cent in P4 and P7 and 94 per cent in S2). Theproportion of P4 pupils agreeing with the statement 'I don't likelearning' decreased between 2013 and 2015 (14 to 11 per cent).

Pupils were also asked about working with numbers. Chart 4.3illustrates similar patterns to learning in general. Enjoyment ishighest in P4 and P7 where 90 per cent and 83 per cent of pupilsstated they enjoyed working with numbers, respectively. At S2,two-thirds of pupils reported enjoying numeracy work. Theproportion of pupils that agreed with the statement 'I learn thingsquickly when working with numbers' has shown a statisticallysignificant decrease for all stages between 2013 and 2015. Thelargest decrease is for S2 from 70 per cent in 2013 to 64 per centin 2015; however this follows a rise from 63 per cent in 2011.

Pupils were asked about perceptions of their abilities in eachof the numeracy organisers. Chart 4.4 shows the proportion ofpupils answering very good or good and the subjects are orderedaccording to perceptions at P7. 'Chance and uncertainty' and'fractions, decimal fractions and percentages' were consistentlyreported as the areas where fewest pupils thought they were good,while 'money' and 'time' were generally the most favoured.

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