实现父子进程之间的通话

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <semaphore.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
int main(int argc, const char *argv[])
{
     int pipefd1[2];
	 if(pipe(pipefd1)<0)
	 {
		 printf("error
");
		 return -1;
	 }
     int pipefd2[2];
	 if(pipe(pipefd2)<0)
	 {
		 printf("error
");
		 return -1;
	 }
	 pid_t pid;
	 pid=fork();
     if(pid<0)
	 {
		 perror("fork");
	 }
	 else if(pid==0)
	 {
         
		 char buf[128]="";
		 char arr[10]="quit";
		 while(1)
		 {
		 bzero(buf,sizeof(buf));
		 ssize_t res;
		 res=read(pipefd1[0],buf,sizeof(buf));
		 if(res<0)
		 {
			 perror("read"); 
		 }
		 if(res==0)
		 {
			 exit(1);
		 }
		 printf("子进程接收到的话:%s
",buf); 
		 printf("请输入子进程向父进程接发送的话:
");
		 bzero(buf,sizeof(buf));
		 fgets(buf,sizeof(buf),stdin);
		 buf[strlen(buf)-1]=;
		 if(write(pipefd2[1],buf,sizeof(buf))<0)
		 {
			 perror("write");
		 }
		 if(strcmp(buf,arr)==0)
		 {
             exit(1);
		 }
		 }
	 }
	 else
	 {
		 char buf[128]="";
		 char arr[10]="quit";
		 pid_t wstatus;
		 while(1)
		 {
		 bzero(buf,sizeof(buf));
		 printf("请输入父进程向子进程接发送的话:
");
		 fgets(buf,sizeof(buf),stdin);
		 buf[strlen(buf)-1]=;
		 if(write(pipefd1[1],buf,sizeof(buf))<0)
		 {
			 perror("write");
		 }
		 if(strcmp(buf,arr)==0)
		 {
			 break;
		 }
		 bzero(buf,sizeof(buf));
		 ssize_t res;
		 res=read(pipefd2[0],buf,sizeof(buf));
		 if(res<0)
		 {
			 perror("read"); 
		 }
		 printf("父进程接收到的话:%s
",buf); 
		 if(strcmp(buf,arr)==0)
		 {
			 break;
		 } 
		 }
	  }
	return 0;
}