Question

1. Suppose that x, y and z are int variables, and x=5, y=7 and z =4, Determine whether the following expressions evaluated to true or false

a). (x!=z%2)||(y! = z++)

b). (--x>= z) || (x+y!=z)

c). (x<=y-2) && (y%3>=z)&&(z-2!=20)

Answer 1

a)  (x!=z%2)||(y! = z++)
=>  (5!=4%2)||(7! = 4++)
=>  (5!=0)||(7!= 4)
=>  true||true
=>  true
Answer: true

b)  (--x>= z) || (x+y!=z)
=>  (--5>= 4) || (5+7!=4)
=>  (4>= 4) || (12!=4)
=>  true||true
=>  true
Answer: true

c)  (x<=y-2) && (y%3>=z)&&(z-2!=20)
=>  (5<=7-2) && (7%3>=4)&&(4-2!=20)
=>  (5<=5) && (1>=4)&&(2!=20)
=>  true && false&&true
=>  false&&true
=>  false
Answer: false