匿名管道

#include<stdio.h>
#include<unistd.h>
#include<string.h>
#include<wait.h>

#define MAX_LINE 80
void main()
{
    int MyPipe[2],ret;
    char buf[MAX_LINE + 1];
    const char *testbuf = "test string!";
    if( pipe ( MyPipe ) == 0 ){
       if( fork() == 0){
         close(MyPipe[1]);
         sleep(2);
         ret = read( MyPipe[0] , buf , MAX_LINE );
         buf[ret] = 0;
         printf("Child read %s \n", buf);
         printf("子进程读取数据成功!\n");
         close(MyPipe[1]);
         exit(1);
       }   
    else
         if( fork() == 0){
         close(MyPipe[0]);
         ret = write( MyPipe[1] , testbuf , strlen(testbuf) );
         printf("父进程写管道成功!\n");
         close(MyPipe[1]);
         printf("父进程关闭写管道成功!\n");
         sleep(2);   
       }   
    }
    return 0;
}