invalid input

[beesea309]

///

[SamuelAdams]

After the user inputs a date, you have to check it to see if it is valid, if it is not then ask for it again.

while (!validdate)
{get date from user}

[beesea309]

I want the program to start again after the message prompts "Sorry, the .. is invalid." Instead, it continues after the error message.