What is a program file and data file?

• Program file: A file, that consists list of statements or commands of a program is called program file. A program file extension is added to a file name by the program itself. Eg. extention of Qbasic is: (.BAS). 
• Data file: A file, that consists the information about a person or an object is called data file. And information are stored either in hard disk or floppy disk.

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