C Data Types
Now let's look at the specifics of the basic data types used by C. For each type, we describe how to declare a variable, how to represent a constant, and what a typical use would be. Some older C compilers do not support all these types, so check your documentation to see which ones you have available.
The int Type
C offers many integer types, and you might wonder why one type isn't enough. The answer is that C gives the programmer the option of matching a type to a particular use. In particular, the C integer types vary in the range of values offered and in whether negative numbers can be used. The int type is the basic choice, but should you need other choices to meet the requirements of a particular task or machine, they are available. ...
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