i need help making this program i have to create a program that adds new customers if they arnt already in the database if they are calculate thier balance and if they wish to order anything that too alll in one program please help me ..

First thing to do is design the database. What will it contain for each customer? How will it be written -- binary or text ? I assume you want to just use a standard file instead of an SQL compliant database, such as MySQL or MS-Access, which would be overkill for your purposes.

Next design a structure that contains the information for each customer. This structure will be used to store data to the database.

After you have that finished, come back with more specific questions about your program.

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