CS 1713 Introduction to Computer Science, Spring 2008 Quiz 2 Comments

20 people took this quiz. Seven people got 1 point and 3 people got 2 points.

1. Write a program segment that increments the integer variable count if the integer variable value is 2 or 3.
   
   • Some people confused && and ||

      if ( (value == 2) || (value == 3))
         count++;
   

2. Write a program segment that uses a loop to set the double variable sum to the sum of the square roots of the integers between 1 and 1000, inclusive.
   Hint: use Math.sqrt().
   
   • A for loop is best for this.
   • sum needs to be initialized (but you do not need to declare it).
   • The loop index needs to be declared.
   • square and square root are different.

      sum = 0;
      for (int i=1; i<=1000; i++)
         sum = sum + Math.sqrt(i);