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CaseStudy-RestaurantBillCalculation.md

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Restaurant Bill Calculation System

You are required to develop a Bill Calculation System for a restaurant. The system must differentiate between dine-in, takeaway, and delivery orders, each incorporating unique charges.

Formula for Bill:

subTotal = billAmount + (billAmount × taxRate)

  • billAmount: This represents the initial amount before any taxes or additional fees are applied.
  • taxRate: This is the percentage of tax applied to the billAmount. It is represented as a decimal (e.g., a tax rate of 10% is represented as 0.1).

Example

  • billAmount: RM100
  • taxRate (10% of the billAmount): = RM10
  • subTotal = RM110

Formula for DineInBill

TotalBill = subTotal + (billAmount × serviceCharge)

  • serviceCharge: The billAmount is multiplied by the serviceCharge rate to determine the additional cost due to the service charge.
  • TotalBill: The amount calculated as the service charge is then added to the subTotal (which includes the tax).

Example

  • serviceCharge (10% of the billAmount): = RM10
  • Total = subTotal + serviceCharge = RM120

Formula for TakeawayBill

TotalBill = subtotal + packagingFee

  • packagingFee: After obtaining the subtotal, the fixed packagingFee is added.

Example

  • packagingFee: = RM8
  • Total = subTotal + packagingFee = RM118

Formula for DeliveryBill

TotalBill = subtotal + deliveryFee

  • deliveryFee: This is a fixed amount added to the bill for the delivery service provided. This fee is generally a set dollar amount, reflecting the cost of delivery regardless of the distance or order size, within a predefined service area.

Example

  • deliveryFee: = RM15
  • Total = subTotal + deliveryFee = RM125

Solution

https://github.com/zhamri/Solution-Restaurant_Bill_Calculation