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Some of the facilities implemented by the C library really should be thought of as parts of the C language itself. These facilities ought to be documented in the C Language Manual, not in the library manual; but since we don’t have the language manual yet, and documentation for these features has been written, we are publishing it here.
• Consistency Checking | Using assert to abort if
something “impossible” happens.
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• Variadic Functions | Defining functions with varying numbers of args. | |
• Null Pointer Constant | The macro NULL .
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• Important Data Types | Data types for object sizes. | |
• Data Type Measurements | Parameters of data type representations. |