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59 lines
1.9 KiB
Plaintext
59 lines
1.9 KiB
Plaintext
#REDIRECT [[OPEN#File_Access_Modes]]
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[[FOR (file statement)|FOR]] is used in a [[OPEN]] statement to indicate the file mode with which to open a file.
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{{PageSyntax}}
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: [[OPEN]] ... [[FOR (file statement)|FOR]] {APPEND|BINARY|INPUT|OUTPUT|RANDOM}
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{{PageDescription}}
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* If [[FOR (file statement)|FOR]] isn't used in an [[OPEN]] statement, the default file mode {{KW|RANDOM}} is used.
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** {{KW|APPEND}} - Keeps the information of the file intact while you can insert information at the end of it, writing permission only.
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** {{KW|BINARY}} - Opens the file in binary mode, use this with binary files.
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** {{KW|INPUT (file mode)|INPUT}} - Opens the file for viewing only.
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** {{KW|OUTPUT}} - The entire contents of the file is erased while you can put new information inside it, writing permission only.
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** {{KW|RANDOM}} - The default, you can get/put records defined by a record length (the variables type or LEN=length).
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{{PageExamples}}
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'''Warning:''' Make sure you don't have a file named test.tst before you run this or it will be overwritten.
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{{CodeStart}}
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{{Cl|CLS}}
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{{Cl|OPEN}} "test.tst" {{Cl|FOR (file statement)|FOR}} {{Cl|OUTPUT}} {{Cl|AS}} #1
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{{Cl|PRINT (file statement)|PRINT}} #1, "If test.tst didn't exist:"
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{{Cl|PRINT (file statement)|PRINT}} #1, "A new file was created named test.tst and then deleted."
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{{Cl|PRINT (file statement)|PRINT}} #1, "If test.tst did exist:"
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{{Cl|PRINT (file statement)|PRINT}} #1, "It was overwritten with this and deleted."
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{{Cl|CLOSE}} #1
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{{Cl|OPEN}} "test.tst" {{Cl|FOR (file statement)|FOR}} {{Cl|INPUT (file mode)|INPUT}} {{Cl|AS}} #1
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{{Cl|DO}} {{Cl|UNTIL}} {{Cl|EOF}}(1)
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{{Cl|INPUT (file statement)|INPUT}} #1, a$
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{{Cl|PRINT}} a$
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{{Cl|LOOP}}
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{{Cl|CLOSE}} #1
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{{Cl|KILL}} "test.tst"
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{{Cl|END}}
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{{CodeEnd}}
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{{OutputStart}}
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If test.tst didn't exist:
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A new file was created named test.tst and then deleted.
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If test.tst did exist:
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It was overwritten with this and deleted.
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{{OutputEnd}}
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{{PageSeeAlso}}
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* [[OPEN]]
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{{PageNavigation}}
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