#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>struct my_msg_st{    long int my_msg_type;	char some_text[BUFSIZ];};int main(void){    int running=1;	int msgid;	struct my_msg_st some_data;	long int msg_to_receive=0;	/*創(chuàng)建消息隊列*/	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)從消息隊列中接收消息*/	while(running)	{		/*讀取消息*/	    if(msgrcv(msgid,(void *)&some_data,BUFSIZ,msg_to_receive,0)==-1)		{		    fprintf(stderr,"msgrcv failed with error: %d\n",errno);			exit(EXIT_FAILURE);		}		printf("You wrote: %s",some_data.some_text);		/*接收到的消息為“end”時結(jié)束循環(huán)*/		if(strncmp(some_data.some_text,"end",3)==0)		{		    running=0;		}	}	/*從系統(tǒng)內(nèi)核中移走消息隊列*/	if(msgctl(msgid,IPC_RMID,0)==-1)	{	    fprintf(stderr,"msgctl(IPC_RMID) failed\n");		exit(EXIT_FAILURE);	}	exit(EXIT_SUCCESS);}