Basic Input & Output in Programs
In the Wolfram System's standard notebook interface, you are directly giving input and getting output every time you press . Although much more rarely needed than in more primitive languages, the Wolfram Language 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
Echo — print and return any expression
EchoEvaluation — print expressions and the results of evaluating them
Formatted Output »
"string" (String ) ▪ Row ▪ Column ▪ ...
Input , InputString — put up a dialog to request input of an expression or string
File Operations »
Import , Export — import and export in hundreds of formats
OpenWrite ▪ OpenRead ▪ Write ▪ Read ▪ ReadList ▪ ...