Explain different datatypes in C

In C programming, data types are declarations for variables. This determines the type and size of data associated with variables. Here are the different data types in C:

1. Integer Types: They can store whole numbers, positive or negative, without decimals. Examples are int, short, long, long long.

2. Floating-Point Types: They can store real numbers (numbers with fractions) and are represented by float and double.

3. Character Types: They can store single characters, such as 'A', 'b', or '9'. They are represented by char.

4. Void Type: The void type means no value. This is usually used to specify the type of functions which returns nothing. We cannot declare a variable of void type.

5. Derived data types: These data types are derived from the built-in data types. They include Array, Function, Pointer, and Structure.

6. Enumeration Types: An enumeration is a user-defined data type that consists of integral constants. To define an enumeration, keyword enum is used.

7. Boolean Types: _Bool is used for boolean types in C. They can store either true or false.

Each of these data types requires different amounts of memory and has some specific operations which can be performed over it.