The sum 27 and a number g

27 + g is how you write if u want a solution tell me what G is = to

Step-by-step explanation:

II. int z;

Step-by-step explanation:

int z;

is the best option, because on the next line you will define the variable as

z = (x + y) / 2;

you can also use int z=0; but it is not necessary according to the code segment given.