Thus, the header files indicate the C interface to the functions. Their exact implementation will vary from operating system to operating system. What is important is that the effect is always the same.
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| Lesson 8: Common Standard Libraries |
| Introduction |
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We have met several libraries to date, now it is time to run through the most commonly supplied, and used libraries that provide access to certain useful functions. Since the C language does not in itself have any ‘real’ input and output, screen handling, file handling, even time, date or string handling, it was necessary to provide these in a system-independent way. Thus, the header files indicate the C interface to the functions. Their exact implementation will vary from operating system to operating system. What is important is that the effect is always the same. |