function calcRectArea(width, height) {
  return width * height;
}

console.log(calcRectArea(5, 6));
// Expected output: 30

    function name([param[, param,[..., param]]]) { [statements] }

var hoisted = "foo" in this;
console.log(
  `'foo' name ${
    hoisted ? "is" : "is not"
  } hoisted. typeof foo is ${typeof foo}`,
);
if (false) {
  function foo() {
    return 1;
  }
}

// In Chrome:
// 'foo' name is hoisted. typeof foo is undefined
//
// In Firefox:
// 'foo' name is hoisted. typeof foo is undefined
//
// In Edge:
// 'foo' name is not hoisted. typeof foo is undefined
//
// In Safari:
// 'foo' name is hoisted. typeof foo is function

var hoisted = "foo" in this;
console.log(
  `'foo' name ${
    hoisted ? "is" : "is not"
  } hoisted. typeof foo is ${typeof foo}`,
);
if (true) {
  function foo() {
    return 1;
  }
}

// In Chrome:
// 'foo' name is hoisted. typeof foo is undefined
//
// In Firefox:
// 'foo' name is hoisted. typeof foo is undefined
//
// In Edge:
// 'foo' name is not hoisted. typeof foo is undefined
//
// In Safari:
// 'foo' name is hoisted. typeof foo is function

hoisted(); // logs "foo"

function hoisted() {
  console.log("foo");
}

notHoisted(); // TypeError: notHoisted is not a function

var notHoisted = function () {
  console.log("bar");
};

function calc_sales(units_a, units_b, units_c) {
  return units_a * 79 + units_b * 129 + units_c * 699;
}