Question

Describe the steps that are generally taken when an input validation loop is used to validate data.

Short answer

Answer: The general steps involved in using an input validation loop are: 1. Prompt the user for input. 2. Read the user's input and store it in a variable. 3. Validate the input based on predefined conditions. 4. Check validation results. 5. Inform the user about invalid input (if necessary). 6. Repeat the loop until valid input is received. 7. Proceed with further processing once valid input is obtained.

Step-by-step solution

Prompt the user for input

The first step is to prompt the user for input by displaying a message on the screen requesting the data. This ensures the user understands what data is required and what format it should be in.

Read the user's input

Once the user has been prompted, read the entered data. Store the input into a variable so that it can be used for validation and further processing.

Validate the input

After receiving the user's input, check if the data is valid according to the predefined conditions. This can include checking whether the input data is within an acceptable range, in the correct format, or meets any other specified criteria.

Check validation results

If the input data passes all the validation checks, it means that the data is valid and can be used for further processing. However, if the input fails any validation check, it is considered invalid.

Inform the user about invalid input (if necessary)

If the input is invalid, inform the user about the problem and explain the correct format or conditions the input should meet. This step is essential to help the user understand the mistake and provide correct information.

Repeat the loop until valid input is received

If the entered data is invalid, the loop should continue, starting from Step 1, and prompt the user for input again. Repeat this process until the user provides a valid input.

Proceed with further processing

Once the input data is valid, exit the loop and proceed with further processing or calculations, as required by the program or application.