Shorthands for Reassignment

All the same shorthands for reassignment work with doubles the same as they do with ints.

void main() {
double x = 0.5;
// 0.5
System.out.println(x);

x += 3;
// 3.5
System.out.println(x);

x -= 1;
// 2.5
System.out.println(x);

x++;
// 3.5
System.out.println(x);

x--;
// 2.5
System.out.println(x);

x *= 5;
// 12.5
System.out.println(x);

x /= 2;
// 6.25
System.out.println(x);
}