HP Pascal/iX Reference Manual (31502-90022)

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BEGIN
rewrite(myfile);
writeln(myfile,'integer',i);
writeln(myfile,'real',r);
END.
input
When the standard textfile input appears as a program parameter, there
are several important consequences:
* Input may not be declared in the global declaration of the source
code.
* The system automatically associates input with an
implementation-dependent physical file.
* The system automatically resets input .
* If certain file operations omit the logical file name parameter,
input is the default file. For example, the call read(x) where x
is some variable, reads a value from input into x. Consider:
PROGRAM mute (input);
VAR answer : string[255];
BEGIN
readln(answer);
END.
The program waits for input. Output need not appear.
If an imported module uses input , it must appear as a program parameter
for the importing program, and the module must import the predefined
module stdinput .
output
When the standard textfile output appears as a program parameter, there
are several important consequences:
* Output may not be declared in the global declaration part of the
source code.
* The system automatically associates output with an implementation
dependent, physical file. Depending on your implementation, refer
to the HP Pascal/iX Programmer's Guide or the HP Pascal/HP-UX
Programmer's Guide for more information.
* The system automatically rewrites output .
* If certain file operations omit the logical file name parameter,
output is the default file. For example, the call write(x), where
x is some variable, writes the value of x onto output . Consider:
PROGRAM sample (output);
BEGIN
writeln('I like Pascal!');
END.
The program displays the string literal on the default output device.
output must appear as a program parameter; input need not appear if the
program does not use it.
If an imported module uses output , it must appear as a program parameter
for the importing program, and the module must import the predefined
module stdoutput .
Record