1. Data Types
Always data types will decide which type of information we are storing into variables
In C programming language we are having 3 types of basic data types
1. char
2. int
3. float

2. .
When the basic data types are not supporting user requirements then go for primitive data types
primitive data types are constructed by extending the size and range of basic data types

3. . Type Size Range Format specifier Example char 1 byte -128 to +127 %c
‘a’ , ‘A’
unsigned char
0 to 255
int
2 byte to %d
-25, 5, 0, -5
unsigned int
2 bytes
0 to 65535 %u
254, 36777
long int
4 bytes to
%ld
45l, -5l, 5000l
unsigned long
0 to
%lu
1000l, 20000l
float
±3.4*10±38 %f
-3.5f ,125.13f
double
8 bytes
±1.7*10±308
%lf
, 270.6
long double
10 bytes
±3.4*10±4932
%Lf L,
-1.2L