Question

What does this function do?

int mystery(double employees[], double id, int size)
{
   for (int i = 0; i < size; i++)
   {
       if (id == employees[i])
       {
           return i; 
        }

    }
   return -1; 
}

A.	This is a function that performs a search. If the id is found in the employees array, its index location is returned, otherwise -1 is returned.

B. This is a function that sorts the employees array

C. This is a function that returns all index numbers in the employees array, one at a time. Once the entire array has been processed, -1 is returned.

D. This is a function that swaps the value in the id variable with the value in the employees array at index i. If the swap cannot be performed, -1 is returned.

The numbers to the left represent the line numbers, but are not part of the code. Why is the temp variable necessary in this function?

1         void swapShells(int &n1, int &n2)
2         {
3              int temp = n1;
4              n1 = n2;
5              n2 = temp;
6         }

A. Because the value of n2 is overwritten on line 4. Without first saving it in the temp variable, the original value of n2 would be lost.

B. Because n1 and n2 are passed by reference, temp is necessary to return the result.

C. Because there are three values being swapped. n1, n2 and temp.

D. Because the value of n1 is overwritten on line 4. Without first saving it in the temp variable, the original value of n1 would be lost.

Answer 1