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Table of Contents
4. Standard Units
4.67. System - Built-in routines
4.67.2. System Unit Procedures and Functions
4.67.2.37. Halt procedure
4.67.2.37. Halt procedure
Targets: MS-DOS, OS/2, Win32
System Unit
Stops program execution and returns to the operating system.
Declaration:
procedure Halt [ ( Exitcode: Word ) ];
where:
Exitcode is an optional expression that specifies the exit code
of your program.
Remarks:
The exit code can be retrieved in DOS by using ErrorLevel in a batch file.
If the program does not return to DOS, use DosExitCode
to determine the exit code. For more information about ErrorLevel
consult your DOS reference manual.
Example:
{$ifndef __CON__}
This program must be compiled as console application only
{$endif}
begin
if ParamCount <> 1 then begin
WriteLn('Error: No parameters passed.');
Halt(1);
end;
...
end.
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