text: #include "types.h"
  #include "stat.h"
  #include "user.h"
  
  int test(int n)
  { 
     int x = n + 1;
     return x;
  }
  int main(int argc, char *argv[])
  {
     int pid=0;
     pid=fork();
     if(pid==0){
         test(1);
         exit();
     }
     wait();
     exit();
  }
  
  