Data Types in C






In the C programming language, data types are declarations for memory locations or variables that determine the characteristics of the data that may be stored and the methods (operations) of processing that are permitted involving them. The C language provides basic arithmetic types, such as integer and real number types, and syntax to build array and compound types. Several headers in the C standard library contain definitions of support types, that have additional properties, such as providing storage with an exact size, independent of the implementation.




 DATA TYPES IN 'C'


Some valid and invalid declarations

DATA TYPES IN 'C'
Data Types Memory Requirement Description
int
2 bytes
 stores a whole number
float
4 bytes
 stores a floating point number
char
1 bytes
 stores a character
double
8 bytes
 Double prcession floating number
bool
1 bit
 stores a true or false value

Qualifiers

The qualifiers such as signed ,unsigned, long, and short.
they can be applied to character and integer basic datatypes .
however, the qualifier long may also be applied to double.

Qualifiers and their casting

QUALIFIERS IN 'C' , just for your knowledge
Types Memory Requirement Range
int
2 bytes
 -32,768 to 32,768
char
1 bytes
 -128 to 127
unsigned int
2 bytes
 0 to 65535
signed int
2 bytes
 -32,768 to 32,767
short int
2 bytes
 -32,768 to 32,767
unsigned short int
2 bytes
 0 to 65535
signed short int
2 bytes
 -32,768 to 32,767
long int
4 bytes
 -214748648 to 21477483647
signed long int
4 bytes
 -214748648 to 21477483647
unsigned long int
4 bytes
 0 to 4294967295
unsigned char
1 bytes
 0 to 255
signed char
1 bytes
 -128 t 127
float
4 bytes
 -3.4e-38 to 3.4e+38
double
8 bytes
 -1.7e-308 to 1.7e+308
long double
10 bytes
 3.4e-4932 to 1.1e+4932
bool
1 bit
 0 t0 1



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Simple Practice programs

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