1 #include <unistd.h>
2 #include <stdio.h>
3 #include<sys/wait.h>
4
5 int main( void )
6 {
7 int filedes[2];
8 char buf[80];
9 pid_t pid;
10
11 pipe( filedes );
12 pid=fork();
13 if (pid > 0)
14 {
15 printf( "This is in the father process.\n" );
16 char s[] = "this is write by pipe.\n";
17 write( filedes[1], s, sizeof(s) );
18 close( filedes[0] );
19 close( filedes[1] );
20 }
21 else if(pid == 0)
22 {
23 printf( "This is in the child process.\n" );
24 read( filedes[0], buf, sizeof(buf) );
25 printf( "%s\n", buf );
26 close( filedes[0] );
27 close( filedes[1] );
28 }
29
30 waitpid( pid, NULL, 0 );
31 return 0;
32 }
