1 #include <stdio.h>
 2 #include <stdlib.h>
 3 #include <unistd.h>
 4 int main(void) {
 5     int data_processed; //用于记录已经处理的数据
 6     int file_pipes[2];  //定义两个文件描述符
 7     char buffer[BUFSIZ + 1];        //定义一个缓冲区，以便从管道中读取数据
 8     const char * some_data = "123"; //定义一个将要写入管道中的字符串
 9     memset(buffer, '\0', sizeof(buffer)); //初始化读取缓冲区
10     if (pipe(file_pipes) == 0) {          //创建管道
11         data_processed = write(file_pipes[1], some_data, sizeof(some_data));
12         printf("写入%d个字符\n", data_processed);
13         data_processed = read(file_pipes[0], buffer, BUFSIZ);
14         printf("读出%d个字符。内容是：%s\n",data_processed,buffer);
15         exit(EXIT_SUCCESS);
16     }
17     return EXIT_FAILURE;
18 }