What is a Data Type in C
Data type is used to specify the type of data.
| Type | Data types |
| Basic Data Type | int, char, float, double |
| Derived Data Type | array, pointer, structure, union |
| Enumeration Data Type | enum |
| Void Data Type | void |
Basic Data Types
| Type | Storage size | Value range |
| char | 1 byte | -128 to 127 or 0 to 255 |
| unsigned char | 1 byte | 0 to 255 |
| signed char | 1 byte | -128 to 127 |
| int | 2 bytes | -32,768 to 32,767 |
| unsigned int | 2 bytes | 0 to 65,535 |
| short | 2 bytes | -32,768 to 32,767 |
| long | 4 bytes | -2,147,483,648 to 2,147,483,647 |
| unsigned long | 4 bytes | 0 to 4,294,967,295 |
| float | 4 bytes | 1.2E-38 to 3.4E+38 (6 decimal places) |
| double | 8 bytes | 2.3E-308 to 1.7E+308 (15 decimal places) |
| Long double | 10 bytes | 3.4E-4932 to 1.1E+4932 (19 decimal places) |