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The "while" loop in C++ is used to repeatedly execute a block of code as long as a certain condition is true. Here is an explanation of each step involved in using the "while" loop:

1. Initialize variables: Before starting the loop, you need to initialize any variables that will be used in the loop. This step is optional and depends on your specific requirements.

2. Condition check: The condition check is performed at the beginning of each iteration of the loop. If the condition is true, the code inside the loop will be executed. If the condition is false, the loop will be terminated, and the program will move on to the next line of code after the loop.

3. Code execution: If the condition is true, the code inside the loop will be executed. This code can include any valid C++ statements, such as variable assignments, function calls, or conditional statements.

4. Update the loop control variable: After executing the code inside the loop, you need to update the loop control variable. This step is crucial to prevent an infinite loop. If you forget to update the loop control variable, the loop may continue indefinitely.

5. Repeat steps 2-4: Once the loop control variable is updated, the condition will be checked again. If the condition is still true, the code inside the loop will be executed again. This process continues until the condition becomes false.

6. Exit the loop: When the condition becomes false, the loop will be exited, and the program will continue executing the next line of code after the loop.

It's important to note that the condition in the "while" loop must be a boolean expression, which evaluates to either true or false. If the condition is initially false, the code inside the loop will never be executed.

Overall, the "while" loop is a powerful construct in C++ that allows you to repeat a block of code until a specific condition is no longer true. It provides flexibility and control over the flow of your program.