/* Get Programming with JavaScript

 * Listing 6.05

 * A function with three arguments

 */

​

var totalCost;

​

totalCost = function (callOutCharge, costPerHour, numberOfHours) {

    return callOutCharge + costPerHour * numberOfHours;

};

​

console.log("$" + totalCost(30, 40, 3));

​

​

​

/* Further Adventures

 *

 * 1) What is the cost for 12 hours work?

 *

 * 2) The plumber sometimes issues discount coupons.

 *    Add a fourth parameter to the totalCost

 *    function definition to account for discounts.

 *

 * 3) Update the function to subtract the discount

 *    from the total before returning it.

 *

 * 4) If a customer has a $20 off coupon,

 *    update the call to totalCost

 *    to display the total cost.

 *    It should now be $130 for 3 hours.

 *

 */