pa-04

pa-06/a1/d.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <unistd.h>
+int main(void) {
+    int v1 = 0, v2 = 0, v3 = 0, pid;
+    pid = getpid();
+    v2++;
+    if (fork()) {
+        v1++;
+        v2++;
+        sleep(1);
+        if (fork()) {
+            v1++;
+            sleep(1);
+        }
+    }
+    if (pid == getppid()) {
+        v3++;
+    }
+    printf("%d %d %d\n", v1, v2, v3);
+    return 0;
+}