#include <stdlib.h>#include <stdio.h>#include <string.h>#include <errno.h>#include <unistd.h>#include <sys/types.h>#include <sys/ipc.h>#include <sys/msg.h>#define MAX_TEXT 512struct my_msg_st{    long int my_msg_type;	char some_text[MAX_TEXT];};int main(void){    int running=1;	struct my_msg_st some_data;	int msgid;	char buffer[BUFSIZ];	/*創(chuàng)建消息隊(duì)列*/	msgid=msgget((key_t)1234,0666 | IPC_CREAT);	if(msgid==-1)	{	    fprintf(stderr,"msgget failed with error:%d\n",errno);		exit(EXIT_FAILURE);    }	/*循環(huán)向消息隊(duì)列中添加消息*/	while(running)	{	    printf("Enter some text:");		fgets(buffer,BUFSIZ,stdin);		some_data.my_msg_type=1;		strcpy(some_data.some_text,buffer);		/*添加消息*/		if(msgsnd(msgid,(void *)&some_data,MAX_TEXT,0)==-1)		{		    fprintf(stderr,"msgsed failed\n");			exit(EXIT_FAILURE);		}		/*用戶輸入的為“end”時結(jié)束循環(huán)*/		if(strncmp(buffer,"end",3)==0)		{		    running=0;		}	}	exit(EXIT_SUCCESS);}