mkmsg.c

来自「scounix编译通过,c/s完整实现」· C语言 代码 · 共 31 行

/*
*./mkmsg.c
*make message queue with keys and mode given as inputs.
*/
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>

main()
{
	int msgid, key, mode, ret ;
	char err[20] ;

	for ( ; ; )
	{
		printf("\n Input Key, Mode:");
		if ( scanf("%d%o", &key, &mode) == -1)
			exit(0) ;
		if ( (msgid = msgget(key,mode)) == -1)
		{
			fprintf(stderr, "ERROR: errno=%d for key:%d\n",errno,key);
			perror(err) ;
		}
		else
			printf("OK   : msgid=%d for key:%d\n", msgid,key);
}
}