problem1. What is the primary merit when using data files in programs?
problem2. describe how data files can be classified in C.
problem3. What is the purpose of a buffer area when working with the data files?
problem4. describe how the buffer area is defined?
problem5. What do you understand by the term stream pointer?
problem6. What is the relationship between stream pointer and buffer area?
problem7. Describe the process of opening a data file in C.