Question

Write a do-while loop that asks the user to enter two numbers. The numbers should be added and the sum displayed. The user should be asked if he or she wishes to perform the operation again. If so, the loop should repeat; otherwise it should terminate.

Short answer

Question: Write a short description of how to create a do-while loop that adds two user-entered numbers and repeats the operation based on the user's choice. Answer: To create a do-while loop that adds two numbers entered by the user and repeats the operation based on the user's decision, start by setting up a do-while loop structure. Inside the loop, prompt the user to enter two numbers and store them in variables. Calculate the sum of the entered numbers and display the result. Then, ask the user if they want to perform the operation again and store their response in a variable. Lastly, set the loop's repetition condition based on the user's response: if they wish to continue, the loop should repeat; otherwise, it should terminate.

Step-by-step solution

Set up the do-while loop

To begin, create a do-while loop with the structure: "do { // loop body } while (/*condition*/);". The loop body will contain the steps needed to ask for user input, calculate the sum, and display the result.

Prompt the user to enter two numbers

Inside the loop body, use appropriate commands or functions (depending on the programming language you are using) to prompt the user to enter two numbers. Store these numbers in variables for later use. For example, in Python, you might use "num1 = float(input('Enter the first number: '))" and "num2 = float(input('Enter the second number: '))".

Calculate the sum

Calculate the sum of the two numbers entered by the user and store the result in a variable. This can be achieved with a simple addition operation: "sum = num1 + num2".

Display the sum

Use a command or function to display the calculated sum to the user. For example, in Python, you might use "print('The sum of the numbers is:', sum)".

Ask the user if they want to perform the operation again

Prompt the user to indicate whether they wish to perform the operation again. For example, in Python, you might use "repeat = input('Do you want to perform the operation again? (yes/no): ')". Store the user's response in a variable.

Set the condition for the do-while loop

In the "while" part of the do-while loop, set the condition that will determine whether the loop should repeat or terminate. This condition should be based on the user's response to whether they want to continue the operation or not. For instance, in Python, you can use "while (repeat.lower() == 'yes'):". By following these steps, you will have created a do-while loop that asks the user to enter two numbers, calculates their sum, and repeats the process if the user desires.