import "fmt"

# function statement
func sq1($x, $y) {
	$y + $x * $x
}

# function expression
$sq2 = func($x, $y) {
	$y + $x * $x
}

$x1 = sq1(3, 4) # 3^2 + 4 = 13
$x2 = $sq2(7, -7) # 7^2 + 2 = 42

test fmt.printf("sq1: %d", $x1) {}
test fmt.printf("sq2: %d", $x2) {}