[USER] Exit and wait syscalls

init/init.c

@@ -1,22 +1,32 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
+#include <sys/wait.h>
 int main(int argc, char **argv)
 {
   (void) argc;
   (void) argv;
 
-  int num = 5;
-
-  if(fork())
+  if(!fork())
   {
-    num = 10;
-    printf("I am the parent! - %d\n", num);
-  } else {
-    num = 3;
-    printf("I am the child! - %d\n", num);
+    if(!fork())
+      return 200;
+    return 100;
   }
 
+  for(int j=0; j <= 10; j++)
+  {
+    if(!fork())
+      return j;
+  }
+  while(1)
+  {
+    int retval;
+    int pid = wait(&retval);
+    printf("Pid: %d exited with %d\n", pid, retval);
+  }
+
+
   for(;;);
   return 0;
 }