L E S S O N S E T 5 Loops and Files Working with the while Loop Bring in program while.cpp from the Lab 5 folder. (This is Sample Program 5.2 from the Pre-lab Reading Assignment). The code is shown below: // PLACE YOUR NAME HERE #include using namespace std; int main() { char letter = 'a'; while (letter != 'x') { cout << "Please enter a letter" << endl; cin >> letter; cout << "The letter you entered is " << letter << endl; } return 0; } Exercise 1: This program is not user friendly. Run it a few times and explain why. Exercise 2: Add to the code so that the program is more user friendly. Exercise 3: How would this code affect the execution of the program if the while loop is replaced by a do-while loop? Try it and see.

L E S S O N S E T 5 Loops and Files Working with the while Loop Bring in program while.cpp from the Lab 5 folder. (This is Sample Program 5.2 from the Pre-lab Reading Assignment). The code is shown below: // PLACE YOUR NAME HERE #include using namespace std; int main() { char letter = 'a'; while (letter != 'x') { cout << "Please enter a letter" << endl; cin >> letter; cout << "The letter you entered is " << letter << endl; } return 0; } Exercise 1: This program is not user friendly. Run it a few times and explain why. Exercise 2: Add to the code so that the program is more user friendly. Exercise 3: How would this code affect the execution of the program if the while loop is replaced by a do-while loop? Try it and see.

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter5: Control Structures Ii (repetition)

Section: Chapter Questions

Problem 30SA

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The function print_last_line in python takes one parameter, fname, the name of a text file. The function should open the file for reading, read the lines of the file until it reaches the end, print out the last line in the file, report the number of lines contained in the file, and close the file. Hint: Use a for loop to iterate over the lines and accumulate the count. For example: Test Result print_last_line("wordlist1.txt") maudlin The file has 5 lines.
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