# COMP1521 18s1 Exam Q4

A.   i) x | y == 1111111011111100
    ii) x & y == 0001001000010100
   iii) x ^ y == 1110110011101000
    iv) ~ x   == 1110110111001011


B.  The function `f()' swaps the two values pointed to by `x' and `y'
    around so that, after the function call, `x' points to the value
    initially pointed by `y', and `y' points to the value initially
    pointed to by `x'.