Lab 8 Answer Sheet

This lab is to be worked in a group.

Name: ________________________ Netid: _______________ Section: _______

Each problem worth 1 point except Part I #1 worth 2 points.

Part I

1. Rewrite the program using a do-while loop. Fill in the blanks below with your code. Try compiling and running both versions of the loop to make sure they behave exactly the same.

/* You may not need to use all the blanks below. */

  #include <stdio.h>
  #include <time.h>    /* library containing the "time" function */
  #include <stdlib.h>  /* library containing the "rand" function */

  void main(void) 
  {
     int N;
     int Total = 10;
     int counter = 1;
      


     printf("Enter a number: ");
     scanf("%i", &N);


     	________do________________________________________________________________________ 
     

     	_________{_______________________________________________________________________


		_____________printf(" %i ", rand()%(N+1));________________________________________
     

	_____________counter = counter + 1;_______________________________________________


	________} while(counter <= Total);________________________________________________     
     printf("\n");
  }

2. Rewrite the program using a for loop. Fill in the blanks below with your code. Try compiling and running both versions of the loop to make sure they behave exactly the same.

/* You may not need to use all the blanks below. */

  #include <stdio.h>
  #include <time.h>    /* library containing the "time" function */
  #include <stdlib.h>  /* library containing the "rand" function */

  void main(void) 
  {
     int N;
     int Total = 10;
     int counter = 1;
      


     printf("Enter a number: ");
     scanf("%i", &N);

	__________for(counter = 1; counter <= Total; counter = counter +1)_____________ 
     

     	__________{______________________________________________________________________


		_________________printf(" %i ", rand()%(N+1));___________________________________
     

	___________}___________________or ____counter = counter +1;  and no update statement above__


	________________________________________}________________________________________     
     printf("\n");
  }

Part II

TA's signature __________________________________
What is the best strategy to win the guessing game?

Guess the middle number in the possible range so that the range is halved after every guess.
OR any equivalent answers

Part III

TA's signature ______________________________________

Note: If students write code for openGL, do not grade it. (The signature suffices.)