z/OS UNIX System Services User's Guide
z/OS UNIX System Services User's Guide
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The fopen() function z/OS UNIX System Services User's Guide SA23-2279-00 |
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The fopen() function recognizes and handles the difference between a ddname associated with a data set (DSN keyword) or with a path name (PATH keyword). Example: Issue:
Result: The fopen() function takes the ddname FRED, determines if FRED refers to a ddname for a file or a data set, and opens it. Once a file is opened, fread() and fwrite() can access the data 
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