One day, the teacher was teaching a very basic class in BASIC programming to a group of adults. Adults that have never used the computers before are very nervous. So it was harder to teach than children, however he's a patient person so he enjoy their successes.
However, he must share something about computer uses like this :
After putting a short program on the board, he told the students to type "R," "U," "N" and press the "ENTER" button to see the program respond.
Suddenly the guy has went up his hand in the back and said, "I did what you said and it didn't work." The students was thinking that all of them make mistakes when they're typing at the computer, the teacher suggested she retype "R," "U," "N" and press return and might be the computer has a little problem. A few seconds later, the guy's hand goes up again. "It still doesn't work," he said.
So... the teacher went to back to see what the problem was happening ...
You know what happened???
Actually the guy had typed in the following : ARE YOU IN !
Oh no!!!! I typed the wrong password.