发送程序与msg1.c类似。在main函数中，删除msg_to_receive声明，代之以buffer[BUFSIZ]。移除消息队列删除代码，并且在running循环中做出如下更改。现在我们调用msgsnd来将输入的文本发送到队列中。 -The sending program msg1.c similar. Delete msg_to_receive statement in the main function, replaced by the buffer [BUFSIZ]. Remove