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The formatting of your code makes it very hard to read.

Have you solved your problem now?

The case statements are all in the switch() statement. The end of the switch statement could be a natural place to put the end of the loop.

If you want the program to repeat a section of code, you need to put that code inside of a loop.
Probably a while(condition) loop that will execute until the user has told the program to stop...

What happens using the switch statement?

What is your problem now?