Customer Billing System in C

Billing software is used to invoice clients for services and goods as well as to track time and billing. It helps with the administration of a chain of stores as well as other company billing systems. Additionally, it provides recurring services and a professional rent billing system. Billing systems assist in the automation of time-consuming operations including, but not limited to, the creation of invoices, tracking of products, and other accounting records. Furthermore, you don't need to worry about it every time you bill because such software automatically calculates and applies tax on taxable items.

• End-users of the system as well as the administrators who oversee, manage, and carry out normal activities to promote the usage of the proposed billing system are referred to as administrators.
• Customer - The intended users of the proposed web-based billing and collection system.
• Efficiency is a group of traits that affect how software performs and how many resources are used when particular circumstances exist. These traits include temporal behavior and resource utilization.
• Functionality - A group of elements, including suitability, accuracy, interoperability, and security, affect the existence of a group of functions and their claimed attributes.
• The ability of software to be moved from one environment to another depends on a number of factors, including adaptability, install ability, cohabitation, and replace ability.
• Reliability is the capacity of software to maintain its level of performance over an extended period of time while operating in a given environment. Three qualities that impact this ability are maturity, fault tolerance, and recoverability.

Program Breakdown

Above is the structure for items.

Above is the structure for customers.

Above is the structure for temporary.

The above function will show the user the options like product number, product name, quantity and price.

The above code will generate the bill of the products entered by the user.

To display the content from the record txt file the above code will come in action.

To edit the details of the product then above code will come in action.

The above code will give the invoice of the

If a user wants to delete a item then the above code will come in action.

The above code will display the product number, product name, quantity and price.

Program for Customer Billing System

Output:

 * * * * * * * * * *  * * * * * * * * * * * * * * * * * *
                Please Select an Option:
 * * * * * * * * *  * * * * * * * * * * * * * * * * * * *
              01. ADMINISTRATOR
              02. CUSTOMER
              03. EXIT
        Please Enter an Option:
Please Enter an Option: 2

  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
               Plese Select an Option:
  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        01.BILL
        02.INVOICE
        03.DISPLAY
        04.MYCART
        05.MAIN MENU
        06.DELETE ITEMS IN CART

        Please Enter an Option: 2
There are No Products in your Cart
* * * * * * * * * * * * * * * * * * * * * * INVOICE * * * * * * * * * * * * * *  * * * * * * * * 
product number  | product name  | price | quantity      | amount        |
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
Amount Payable:0.000000
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