void main() {
var x = 10;
var y = 4;
var addition = x + y;
var subtraction = x - y;
var multiplication = x * y;
var division = x / y;
var division_integer = x ~/ y;
var modulus = x % y;
var increment = ++x;
var decrement = --y;
print('x + y = $addition');
print('x - y = $subtraction');
print('x * y = $multiplication');
print('x / y = $division');
print('x ~/ y = $division_integer');
print('x % y = $modulus');
print('++x = $increment');
print('--y = $decrement');
}
/*
run:
x + y = 14
x - y = 6
x * y = 40
x / y = 2.5
x ~/ y = 2
x % y = 2
++x = 11
--y = 3
*/