int x = 5, y = 28;

float z;

z = (float) (y / x);

Why is the answer 5.0 and not 5.6?

Because you're doing integer devision, and the result of integer division is an integer. So 28 / 5 = 5. Then you're casting the answer to a float, which give you 5.0. If you want 5.6 you will need to make either x or y (or both) a float.

try

(float) y / x or y / (float) x

y / x still integar

int x = 5, y = 28;

float z;

z = (float) (y / x);

Why is the answer 5.0 and not 5.6?