in this ppt i will give some data types classification of data types 1.primary datatype 2.user defined datatype 3.Derived datatype 4.void(null)

1. CS8251 PROGRAMMING in C
C.MANOJKUMAR
LEARN HUB

2.  A variable's data type determines the values
that the variable can contain and the
operations that can be performed on it.
 Every variable must have a data type.
 C supports several different types of data.

4. Data Type Size in Bytes Range Use
char 1 –128 to 127 To store characters
int 2 –32768 to 32767 To store integer numbers
float 4 3.4E–38 to 3.4E+38 To store floating point numbers
double 8 1.7E–308 to 1.7E+308 To store big floating point numbers

5.  The (typedef) feature allows users to define
new data types that are equivalent to existing
data types.
 Once a user - defined data type has been
established the new variables, arrays,
structures etc., can be declared in terms of
this new data types

6. typedef int age;
age male, female;
 In this declaration age is a user-defined data type,
which is equivalent to type int.
 age male, female;
 is equivalent to writing
 int male, female;

7.  An enumerated is a user defined data type like a
structure ( or ) a union .
 Its members are constants that are written as
identifiers though they have signed integer
values.
 An enumeration may be defined
 Syntax:
 enum tag { member1 , members2 , .. member m} ;

8.  enumcolours{ black , blue , green , magenta ,
red , white , yellow };