Opening and Closing Files (10.2)

FILE *fp;

fp = fopen( fileName, “r” );

fclose( fp );

• fp is of type “FILE*” (defined in stdio.h)

• fopen returns a pointer (or NULL if unsuccessful) to the specified fileName with the given permissions:

  • “r” read
  • “w” write (create new, or wipe out existing fileName)
  • “a” append (create new, or append to existing fileName)
  • “r+” read and write

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