Renaming folders

chp3_process/ex14.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+int main(void) {
+  pid_t pid, pid1;
+
+  pid = fork();
+
+  if (pid < 0) {
+    fprintf(stderr, "Fork failed");
+    return EXIT_FAILURE;
+  } else if (pid == 0) {
+    pid1 = getpid();
+    printf("child: pid = %d\n", pid);   // A
+    printf("child: pid1 = %d\n", pid1); // B
+  } else {
+    pid1 = getpid();
+    printf("parent: pid = %d\n", pid);   // C
+    printf("parent: pid1 = %d\n", pid1); // D
+    wait(NULL);
+  }
+
+  return EXIT_SUCCESS;
+}