In the C programming
language, data types refer to an extensive system used for declaring variables
or functions of different types. The type of a variable determines how much
space it occupies in storage and how the bit pattern stored is interpreted.
Data Type
|
Storage size
|
Value range
|
char
|
1 byte
|
-128 to 127
|
unsigned char
|
1 byte
|
0 to 255
|
signed char
|
1 byte
|
-128 to 127
|
int
|
2 or 4 bytes
|
-32,768 to 32,767 or -2,147,483,648 to
2,147,483,647
|
unsigned int
|
2 or 4 bytes
|
0 to 65,535 or 0 to 4,294,967,295
|
short
|
2 bytes
|
-32,768 to 32,767
|
unsigned short
|
2 bytes
|
0 to 65,535
|
long
|
4 bytes
|
-2,147,483,648 to 2,147,483,647
|
unsigned long
|
4 bytes
|
0 to 4,294,967,295
|
Type
|
Storage size
|
Value range
|
Precision
|
float
|
4 byte
|
1.2E-38 to 3.4E+38
|
6 decimal places
|
double
|
8 byte
|
2.3E-308 to 1.7E+308
|
15 decimal places
|
long double
|
10 byte
|
3.4E-4932 to 1.1E+4932
|
19 decimal places
|
