Check that file exists: Difference between revisions

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==={{header|Commodore BASIC}}===
Try a file, then check the error status of the disk drive. "Error code 62" is the "File not found" error. The trick is to open the file without specifying the file type (PRG, SEQ, REL, etc.) and the Read/Write mode in the OPEN statement, otherwise you willmay end up with error code 64 "File Type Mismatch".
<lang gwbasic>10 REM CHECK FILE EXISTS
15 ER=0:EM$="":MSG$="FILE EXISTS."
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ENTER FILENAME TO CHECK? NOFILE.DOC
 
'NOFILE.DOC' IS NOT HERE.</pre>
 
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