COMP220 Final Exam 2 (Perfect Tutorial)

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Multiple Choice
1. (TCO 1) Which of the following about C++ arrays is true? 
(i) Array components must be of type double.
(ii) The array index must be of an integral type. (Points : 4)
 Only (i)
  Only (ii)
  Both (i) and (ii)
  None of these
2. (TCO 1) What is stored in alpha after the following code executes?
int alpha[5] = {0};
int j;
for (; j < 5; j++)
{
  alpha[j] = 2 * j;
  if (j % 2 == 1) //see if j is an even number
  alpha[j - 1] = alpha[j] + j;
}
(Points : 4)
 alpha = {0, 2, 4, 6, 8}
  alpha = {0, 2, 9, 6, 8}
  alpha = {0, 3, 4, 7, 8}
  alpha = {3, 2, 9, 6, 8}
3. (TCO 1) What is the value of alpha[3] after the following code executes? 
int alpha[6] = {0};
int j;
for(; j >= 0; j-)
{
  alpha[j] = j + 5;
  if (j % 2 == 0)
  alpha[j + 1] = alpha[j] + 3;