Gets data from the user. It can be used in two forms:
INPUT "How many", variable INPUT "How many"; variable
The only diffence between the two is the punctuation. The semicolon adds a question mark, the comma does not. Therefore the first one asks
How many_
and the second one asks
How many? _
The variable can be any variable name you want. You could call it num, or name$, or hjdfksalhjgkfldah. Just remember that if you want to calculate something with it, make it numeric, and if you want to type something in, make it a string variable.