readIO Enter an integer x:
x = i
readIO Enter an integer y:
y = i
print x + y =
z = x + y
printInt z
print x - y =
z = x - y
printInt z
print x * y =
z = x * y
printInt z
print x / y =
z = x / y  // round toward zero
printInt z
print x % y =
z = x % y  // result retains sign of the first argument
printInt z
print x ^ y =
z = x ^ y
printInt z