完成了第 11 章 进程间通信

ch11/pipe2.c

@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <unistd.h>
+#define BUF_SIZE 30
+
+int main(int argc, char *argv[])
+{
+    int fds[2];
+    char str1[] = "Who are you?";
+    char str2[] = "Thank you for your message";
+    char buf[BUF_SIZE];
+    pid_t pid;
+
+    pipe(fds);
+    pid = fork();
+    if (pid == 0)
+    {
+        write(fds[1], str1, sizeof(str1));
+        sleep(2);
+        read(fds[0], buf, BUF_SIZE);
+        printf("Child proc output: %s \n", buf);
+    }
+    else
+    {
+        read(fds[0], buf, BUF_SIZE);
+        printf("Parent proc output: %s \n", buf);
+        write(fds[1], str2, sizeof(str2));
+        sleep(3);
+    }
+    return 0;
+}