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:

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.