C Language Input Problem In Time Bound

Replies

• 

  sriramchandrk

  Hi Gaurav,
  
  I had given a hint to use alarm command, but looks like you dont have much time.
  Hope this is useful
  Please give credit to me while using this code!! ( just joking)
  
  Thanks & Regards
  Sriram
  
  

  #include 
  #include 
   
  void catch_timeout (int sig)
  {
   printf("\nSorry Timeout!!\n");
   signal(SIGALRM, catch_timeout); //reinstall singal handler
  }
   
  int main()
  {
   unsigned u, ret;
   signal(SIGALRM, catch_timeout); //install signal handler
   
   printf("Please give value of u in 4 seconds!:");
   ret = alarm(4);
   scanf("%u", &u);
   alarm(0);// in all cases you need to reset alarm
   
   if(!ret)
   {
          printf("timeout so moving ahead withe default values for\n");
   }
   
   // second try
   printf("Please give value of u in atleast in 5 seconds!:");
   ret = alarm(5);
   scanf("%u", &u);
   alarm(0);//in all cases you need to reset alarm
   
   if(!ret)
   {
          printf("timeout again so moving ahead withe default values for\n");
   }
  }