QB64-PE/internal/help/FOR_(file_statement).txt

{{KW|FOR (file statement)|FOR}} is used in a {{KW|OPEN}} statement to select the filemode to open the file with.


{{PageSyntax}}
:{{KW|OPEN}} ... {{KW|FOR (file statement)|FOR}} {APPEND|BINARY|INPUT|OUTPUT|RANDOM}


{{PageDescription}}

* If {{KW|FOR (file statement)|FOR}} isn't used in a {{KW|OPEN}} statement then the default filemode {{KW|RANDOM}} is used.
** {{KW|APPEND}} - Keeps the information of the file intact while you can insert information at the end of it, writing permission only.
** {{KW|BINARY}} - Opens the file in binary mode, use this with binary files.
** {{KW|INPUT (file mode)|INPUT}} - Opens the file for viewing only.
** {{KW|OUTPUT}} - The entire contents of the file is erased while you can put new information inside it, writing permission only.
** {{KW|RANDOM}} - The default, you can get/put records defined by a record length (the variables type or LEN=length).


{{PageExamples}}
'''Warning:''' ''Make sure you don't have a file named test.tst before you run this! It will be overwritten if so!''

{{CodeStart}}

{{Cl|CLS}}

{{Cl|OPEN}} "test.tst" {{Cl|FOR (file statement)|FOR}} {{Cl|OUTPUT}} {{Cl|AS}} #1
{{Cl|PRINT (file statement)|PRINT}} #1, "If test.tst didn't exist:"
{{Cl|PRINT (file statement)|PRINT}} #1, "A new file was created named test.tst and then deleted."
{{Cl|PRINT (file statement)|PRINT}} #1, "If test.tst did exist:"
{{Cl|PRINT (file statement)|PRINT}} #1, "It was overwritten with this and deleted."
{{Cl|CLOSE}} #1

{{Cl|OPEN}} "test.tst" {{Cl|FOR (file statement)|FOR}} {{Cl|INPUT (file mode)|INPUT}} {{Cl|AS}} #1
{{Cl|DO}} {{Cl|UNTIL}} {{Cl|EOF}}(1)
{{Cl|INPUT (file statement)|INPUT}} #1, a$
{{Cl|PRINT}} a$
{{Cl|LOOP}}
{{Cl|CLOSE}} #1

{{Cl|KILL}} "test.tst"

{{Cl|END}}

{{CodeEnd}}

{{OutputStart}}
If test.tst didn't exist:
A new file was created named test.tst and then deleted.
If test.tst did exist:
It was overwritten with this and deleted.
{{OutputEnd}}





{{PageSeeAlso}}
* {{KW|OPEN}}




{{PageNavigation}}