Datatype : a particular kind of data item, as defined by the values it can take, the programming language used, or the operations that can be performed on it.
They are arithmetic types and are further classified into: (a) integer types and (b) floating-point types.
They are again arithmetic types and they are used to define variables that can only assign certain discrete integer values throughout the program.
The type void
The type specifier void indicates that no value is available.
They include (a) Pointer types, (b) Array types, (c) Structure types, (d) Union types and (e) Function types.
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