C has 5 primary data types - character, integer, floating-point, double, and void. The character type stores single characters like letters. Integer stores whole numbers without decimals. Floating-point stores decimal numbers. Double handles very large numeric values beyond the range of integers or floating-point. Void means no value and is used when defining functions. Each data type has a keyword identifier like char for character and int for integer.

1. Data Types in C

2. Data Types

3. Contd….
 C Primary Data types:
The C language has 5 basic (primary or primitive) data types, they are:
 Character - ASCII character set or generally a single alphabet like 'a', 'B', etc.
 Integer - Used to store whole numbers like 1, 2, 100, 1000, etc.
 Floating-point - Decimal point or real numbers values like 99.9, 10.5, etc.
 Double - Very large numeric values which are not allowed in Integer or Floating point
type.
 Void - This means no value. This data type is mostly used when we define functions.

4. Keywords
Datatype Keyword
Character char
Integer int
Floating-point float
Double double
Void void

5. Int
 Integer are whole number
 Zerp,positive or Negative value
 But no decimal value.
 i.e int id;
id=101;
printf(“%d”,id);
 End with semicolon

6. Char
 Keyword “char “ used
 It accept the alphabets
 i.e char test=‘h’;
Printf(“%c”,test);

7. Float and Double
 Used to hold the real numbers.
 i.e float salary;
double price;