structures (also called loops). Loops contain a block of statements that can be executed repeatedly. We will discuss different types of loops and more advanced loop applications. The discussion of loops continues in Chapter 5. ISBN 1-256-14455-X After reading this chapter‚ you will be able to do the following: Distinguish between pre-test and post-test loops [Section 4.1] Identify infinite loops and loops that never get executed [Section 4.1] Create a flowchart using the loop structure [Section 4
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Programming with Python Chapter One Introducing Python * Powerful yet easy to use programming language * Developed by Guido van Rossum * First released in 1991 * Named after comedy troupe Monty Python * An alarming number of references to spam‚ eggs‚ and the number 42 in documentation Why Python? It’s Easy to Use * High-level language: Distinct from the low-level processor operations; closer to human language than machine language * "Programming at the speed
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2014 Term II 1402 Final Exam Study Guide Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following displays a message box to the user? 1) _______ A) MessageBox.Output B) MessageBox.Display C) MessageBox.Show D) DisplayMessageBox 2) The ________ keyword is required to use relational operators in a Case statement. 2) _______ A) To B) Is C) If D)
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Java Software Solutions: Foundations of Program Design‚ 6e (Lewis/Loftus) Chapter 5 Conditionals and Loops Multiple-Choice Questions 1) The idea that program instructions execute in order (linearly) unless otherwise specified through a conditional statement is known as A) boolean execution B) conditional statements C) try and catch D) sequentiality E) flow of control Answer: E Explanation: E) The "flow of control" describes the order of execution of instructions. It defaults
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NATIONAL SENIOR CERTIFICATE GRADE 12 INFORMATION TECHNOLOGY P2 FEBRUARY/MARCH 2013 MARKS: 180 TIME: 3 hours This question paper consists of 20 pages and 1 annexure. Copyright reserved Please turn over Information Technology/P2 2 NSC DBE/Feb.–Mar. 2013 INSTRUCTIONS AND INFORMATION 1. This question paper consists of FIVE sections subdivided as follows: SECTION A: SECTION B: SECTION C: SECTION D: SECTION E: 2. 3. 4. Multiple-choice questions Hardware and software Applications and implications
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Week 1 Week 1 – Quiz A 1. The name of the service that controls the queue of print jobs with the Window NET command is ______. SPOOLER 2. Which of the following Windows commands will shutdown and restart your computer in 2 minutes? Shutdown –r -t 120 3. Which Windows shutdown command switch is sued to log off the current user of the local computer? -l 4. Which one of the following Windows AT commands specifies an action that will take place at 3:00 p.m.? At 15:00 command 5. From
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G. NARAYANAMMA INSTITUTE OF TECHNOLOGY & SCIENCE (For Women) DEPARTMENT OF IT Principles of Programming Language –Operator precedence rules? –Operator associativity rules? –Order of operand evaluation? –Operand evaluation side effects? –Operator overloading? –Type mixing in expressions? Arithmetic Expressions: Operators A unary operator has one operand A binary operator has two operands A ternary operator has three operands Arithmetic Expressions: Operator Precedence Rules The operator precedence
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statement in the body of a loop? By indenting the statements‚ you make them stand out from the surrounding code. This helps you to identify at a glance the statements that are conditionally executed by a loop. 2. Described the difference between pretest loop and posttest loops. A pretest loop tests its condition before each iteration. A posttest loop tests its condition after each iteration. A posttest loop will always execute at least once. 3. What is a condition-controlled loop? Because they are only
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statements in the body of a loop? Because by indenting the statements in the body of the loop you visually set them apart from the surrounding code. This makes your program easier to read and debug 2) Describe the difference between pretest loops and posttest loops A pretest loop means to test its condition before performing an iteration A posttest loop means it performs an iteration before testing its condition 3) What is a condition-controlled loop? A condition-controlled loop uses a true/false condition
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Tomasulo Loop Example Loop: • • • • LD MULTD SD SUBI BNEZ F0 F4 F4 R1 R1 0 F0 0 R1 Loop R1 F2 R1 #8 This time assume Multiply takes 4 clocks Assume 1st load takes 8 clocks‚ 2nd load takes 1 clock Clocks for SUBI‚ BNEZ Show 2 iterations Load=8‚1 Add=3 Mult=4 SUBI/BNEZ=1 Store=3 Instruction status: ITER Instruction 1 1 1 2 2 2 LD MULTD SD LD MULTD SD j 0 F0 0 0 F0 0 F0 F4 F4 F0 F4 F4 k Exec Write Issue
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