This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Basic Input & Output in Programs
In Mathematica's standard notebook interface, you are directly giving input and getting output every time you press Shift+Enter. Although much more rarely needed than in more primitive languages, Mathematica also allows you to get input and generate output as side effects in a computation.
Print print any expression, including graphics, as output
PrintTemporary print temporarily, cleaning up when a computation is complete
"string" (String ▪ Row  ▪ Column  ▪ ...
    
Input, InputString put up a dialog to request input of an expression or string
    
Pause  ▪ Beep  ▪ EmitSound
    
Import, Export import and export in hundreds of formats
OpenWrite  ▪ OpenRead  ▪ Write  ▪ Read  ▪ ReadList  ▪ ...
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