# fopen function

fopen is used to open a file for read, write or update. stdin, stdout & stderr are opened by the system at execution time.

    Library:   stdio.h

    Prototype: FILE *fopen(const char *filename, const char *mode);

    Syntax:    FILE *fp;
    	   fp = fopen( "/etc/printcap", "r");

## Notes:

    	filename - is the name of the file.
    	mode     - r - read file.
                     - w - Write to file.
                     - a - Append to file.

## Example Programs:

Example program.

## See Also:

  fgetc Get a character from a file.
  fgets Get a record from a file.
  fputc Put a character into a file. MAN PAGE.
  fprintf Put a formatted line into a file.
  fclose Close a file.
  pclose Close a pipe.
  system Open a pipe.
  ferror. Check error code on a file stream.
  feof. Check for EOF on a file stream.

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