Data types in Embedded C

Data types

There are 2 data types

a.      Integer

b.      Float

 Integer Data types

Char (Character)

·        Size: Typically, 1 byte (8 bits)

·        Range:

·        Signed: -128 to 127

·        Unsigned: 0 to 255

·        Usage: Used to store single characters such as ‘A’, ‘b’, ‘1’, etc. It can also be used to store small integers.

·        Example:

char letter = ‘A‘;

Int (Integer)

·        Size: Typically, 4 bytes (32 bits) on most modern systems, though it can vary based on the system and compiler.

·        Range:

·        Signed: -2147483648 to 2147483647

·        Unsigned: 0 to 4294967295

·        Usage: Used to store whole numbers without any fractional or decimal part.

·        Example:

int number = 100;

short

·        Size: 2 bytes (16 bits).

·        Range

·        Signed Range: -32,768 to 32,767

·        Unsigned Range: 0 to 65,535

long

·        Size: 4 bytes (32 bits).

·        Range:

·        Signed Range: -2,147,483,648 to 2,147,483,647

·        Unsigned Range: 0 to 4,294,967,295

long long

·        Size: 8 bytes (64 bits).

·        Range:

·        Signed Range: -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

·        Unsigned Range: 0 to 18,446,744,073,709,551,615