var Output : TextFile;
Description
The Output variable is predefined by Delphi to refer to the standard text output file.
This is normally the console, but may be overriden to any file using the Assign statement.
Output is used in the text file Write, WriteLn and Seek routines. It may be omitted in these commands however, since it is the default file.
Related commands
$AppType Determines the application type : GUI or Console
Input Defines the standard input text file
Write Write data to a binary or text file
WriteLn Write a complete line of data to a text file
Example code : Read and write to the console
program Project1;
{$AppType CONSOLE}
uses
SysUtils;
var
name : string;
begin
// A console application has the console Input and Output
// assigned and opened on our behalf.
WriteLn(Output, 'Please enter your name');
ReadLn(Input, name);
// And we do not even have to refer to these file names
WriteLn('Your name is '+name);
WriteLn('');
WriteLn('Press enter to exit');
ReadLn(name);
end.
Example console output :
Please enter your name
Joe Bloggs
Your name is Joe Bloggs
Press enter to exit