IBM Version 4 manual UNIX-Type APIs-Examples, Theread

C\

C\ Print the error and the API that received the error

C\

C		EXCEPT	BAD_NEWS
C\
C		ENDSR
OQPRINT	E	BAD_NEWS		1
O				'Failed in API '
O		API_NAME
O				'with error '
O		QUSEI

UNIX-Type APIs—Examples

The simple example program on the following pages illustrates the use integrated file system functions. The program performs the following op

.1/	Uses	thegetuid()		function to determine the real user ID (uid).
.2/	Uses	thegetcwd()		function to determine the current directory.
.3/	Uses	theopen()		function to create a file. The				owner	(the	person	w
	the	file) is		given read, write, and execute authority to the
.4/	Uses	thewrite()		function to write a byte string to the file. The
	by the		file	descriptor that was provided .in3/).the open operation
.5/	Uses	theclose()		function to close the file.
.6/	Uses	theopen()		function to open the file for read only.
.7/	Uses	theread()		function to read a byte string				from	the file. The
	fied	by	the file descriptor		that	was	provided.6/).in the			open	op
.8/	Uses	theclose()		function to close the file.
.9/	Uses	theunlink()		function to remove	the	link	to	the file.

Using the Integrated File System—ILE	C Example
This example program uses the integrated file system from ILE C.
/\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\/
/\		\/
/\ Language:	ILE C	\/
/\		\/
/\ Description:	Demonstrate use of integrated file system	\/
/\	from ILE C	\/
/\		\/
/\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\/
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#define BUFFER_SIZE	2ð48
#define TEST_FILE	"test.file"

Appendix B. Original Examples in Additional BLanguages-175