This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
 Documentation / Mathematica / Built-in Functions / Input and Output / Basic Operations  /

  • Input[ ] interactively reads in one Mathematica expression.
  • Input[" prompt "] requests input, using the specified string as a prompt.
  • Input returns the expression it read.
  • The operation of Input may vary from one computer system to another. When a Mathematica front end is used, Input may work through a dialog box.
  • When no front end is used, Input reads from standard input.
  • If the standard input is a file, then Input returns EndOfFile if you try to read past the end of the file.
  • On most systems, Input[ ] uses ? as a prompt.
  • When Input is evaluated, Mathematica stops until the input has been read.
  • See the Mathematica book: Section 2.8.20.
  • See also: InputString, Read, Get, Dialog, ButtonBox.