Delphi in a Nutshell

Name

Input Variable

Syntax

var Input: TextFile;

Description

The Input variable is a text file that Delphi automatically opens for reading, but only in console applications. The input file is usually the console, but the user can redirect input from the command shell.

Input is an ordinary TextFile, and you can close it or open a different file. If you open a file without a name, that is the same as opening the console file. For example, Delphi always performs the following when a console application starts running:

AssignFile(Input, '');
Reset(Input);

Calling Read or ReadLn without a file reference as the first argument is the same as calling Read or ReadLn using Input as the first argument.

See Also

AssignFile Procedure, Output Variable, Read Procedure, ReadLn Procedure, Reset Procedure, TextFile Type