Lesson 2

All programming languages have a loop capability. Looping is the program logic’s ability to repeat one or more lines of code either: A set number of times, a “for loop” (i.e. 10, 100, 500, 763 or more times) An “unknown” number of times (i.e. loop terminates if a tested condition becomes “true” or as long as the tested condition remains “false”), a “while” loop, a “do until” loop, a “do while” loop.   This Lab exercise demonstrates the use of the “For Loop”, a standard loop in all programming languages. C++ standard For Loop format looks like:                 For (n = 1; n <= 100; n++)             {                         Loop line 1 code;                         Loop line 2 code;                         Loop line 3 code;                         Loop line N code;             }    The loop code needs: A “loop counter variable” (n in the above example) to keep track of how many iterations this loop has run A starting value (i.e. 1 in the above example) A stop test (i.e. run as…

JAVA Even if the condition is false at the first execution a while loop at least executes once.  True  False A while loop can be used both as an event-controlled loop and as a count controlled loop.  True  False

All of the following are examples of nesting control structure EXCEPT: OHaving a loop inside an if statement body. OHaving a function call inside the body a loop OHaving one loop structure inside another loop structure Having an if-elif statement inside a loop body

c++ problem

True or False ___(4) In a while loop, the body of the loop has to be executed at least once whether the test is true or not.  ___(5) In Java a while loop can be changed to a for loop and vice versa. ___(6) Java statement !( x / 3 = = 6 ) ||  y*3 = = -6 ; evaluates to false if x=19 and y= -2

C++ code not Java

Problem Description: A while loop and do/while loop will repeat code while the condition is true. The basic difference is when the condition is checked. The while loop checks the condition before the loop starts or after the loop ends. A do/while loop will check the condition at the end of the loop to determine if the loop should be repeated. A do/while loop will run at least once whereas a while may be skipped entirely. while ( ) do I/ Repeated code goes here I/ Repeated code goes here while ( ); Checkpoint 1: Use a while loop to display the numbers 1 through 10. You must initialize your loop counter before the loop and increment the loop counter inside the loop. Checkpoint 2: Use a while to ask the user for a list of numbers. It is not known how many numbers the user will enter, but the last number will be -1. After all numbers have been entered, state how many numbers were put in. Checkpoint 3: Use a do/while loop to display the numbers I through 10. You must initialize your loop…

in python for glass box testing of a while loop, you should test cases where: a) the while loop is not entered b) the body of the while loop is executed just once c) the body of the while loop is executed more than once e) all of these f) exiting the loop in the middle of the body

assembly language please with comment and screen shot of the out put

PROGRAMMING LANGUAGE: C++

Design and write a Python program for exercise #19: Please label your steps with comments (#) on your program

C++

computer programming   Loop is used to repeat a sequence of actions or statements many times. Simplydescribe the differences between for-loop and while-loop.

Describe specific programming situations that require a posttest loop.

Python get_user_input(message, sentinel): The parameter message is the string message to request an integer from the user. The parameter sentinel is the unique character that signals the end of input. This function will return value: done, The parameter done is a Boolean flag that signals that the user entered a sentinel value and the value is invalid. main(): calling the get_user_input function until the sentinel value is detected capture the output from the get_user_input function into two variables use the Boolean flag return value to control the loop in main store the integer return value to a Python list The program will print the integers entered back to the user only after the sentinel value is detected

PuTTY/Ocelot Assignment #2 Instructions: (using C language in the UNIX environment, Systems Programming)   Through this programming assignment, the students will learn to do the following:   Usage: mortgagepmt [-s] -r rate [-d downpayment] price   In this assignment, you are asked to perform a mortgage payment calculation. All information needed for this will be passed to the program on the command line. There will be no user input during the execution of the program     You will need a few pieces of information. The price of the home and the amount of the down payment. You will also need to know the interest rate and the term of the mortgage. To figure your mortgage payment, start by converting your annual interest rate to a monthly interest rate by dividing by 12. Next, add 1 to the monthly rate. Third, multiply the number of years in the term of the mortgage by 12 to calculate the number of monthly payments you'll make. Fourth, raise the result of 1 plus the monthly rate to the…

C++ Demonstration #3: Create a program that uses a switch statement for a simple help program. The screen will display the following choices: 1. for 2. if 3. switch Help on: Upon choosing the number, the program will output the following: If 1: for is C++'s most versatile loop If 2: if is C++'s conditional branch statement If 3: switch is C++'s multi-way branch statement If none: Choose a number between 1 and 3 Enter choice (1 – 3):

Using a Sentinel Value to Control a while Loop Summary In this lab, you write a while loop that uses a sentinel value to control a loop in a Java program that has been provided. You also write the statements that make up the body of the loop. The source code file already contains the necessary variable declarations and output statements. Each theater patron enters a value from 0 to 4 indicating the number of stars the patron awards to the Guide’s featured movie of the week. The program executes continuously until the theater manager enters a negative number to quit. At the end of the program, you should display the average star rating for the movie. Instructions Ensure the file named MovieGuide.java is open. Write the while loop using a sentinel value to control the loop, and write the statements that make up the body of the loop to calculate the average star rating. Execute the program by clicking Run. Input the following: 0, 3, 4, 4, 1, 1, 2, -1 Check that the average…

Instruction: It should be a C++ PROGRAM INCLUDE THE HEADER FILE, MAIN CPP, AND BSTREE.CPP There is a real program developed by a computer company that reads a report ( running text ) and issues warnings on style and partially corrects bad style. You are to write a simplified version of this program with the following features:   Statistics   A statistical summary with the following information: Total number of words in the report Number of unique words Number of unique words of more than three letters Average word length Average sentence length An index (alphabetical listing) of all the unique words (see next page for a specific format)   Style Warnings   Issue a warning in the following cases: Word used too often: list each unique word of more than three letters if its usage is more than 5% of the total number of words of more than three letters Sentence length : write a warning message if the average sentence length is greater than 10 Word length : write a warning message if the…

JAVA The loop continuation condition is the inverse of the loop termination condition.  True  False

MUST BE IN PYTHON PROGRAMMING CODE!!!!! NO C++ or Java!! Directions: Design a program with a loop that lets the user enter a series of names (in no particular order). After the final person’s name has been entered, the program should display the name that is first alphabetically and the name that is last alphabetically. For example, if the user enters the names Kristin, Joel, Adam, Beth, Zeb, and Chris, the program would display Adam and Zeb. Additional requirements: Note that the possible set of input values can include negative, 0, or positive values, but not the sentinel value of -99. DESIGN HINT: • When determining the largest (or smallest) value in a set of numbers, remember to use variables to keep track of the current largest (or smallest) number found thus far. These variables can then be used as a comparison to each subsequent input number to see if the new number is larger (or smaller) than the current largest (or smallest) number and updated appropriately. At the end of all…

PYTHON: The following code causes an infinite loop. Can you figure out what is incorrect? def test_code(num): x = num while x % 2 == 0: x = x / 2 test_code(0)   When called with 0, it triggers an infinite loop The modulo operator is used incorrectly Missing an else statement Missing the continue keyword