The document discusses various data types in C++ including built-in, user-defined, and derived types. Structures and unions allow grouping of dissimilar element types. Classes define custom data types that can then be used to create objects. Enumerated types attach numeric values to named constants. Arrays define a collection of elements of the same type in sequence. Functions contain blocks of code to perform tasks. Pointers store memory addresses.

1. DATA TYPES IN C++

2. DATA TYPES IN C++
BY:
 M.PAVAN
 ABDULLAH
 V.VENKAT RAMANA
 G.V.MANISH REDDY

3. CONTENTS
 DATA TYPE
 BUILT IN TYPE
 USER DEFINED TYPE
 DERIVED TYPE

4. DATA TYPE
A data type is a classification that specifies the
type of value a variable can hold.
General syntax of declaration of data type is
data_type variable_name;
Example: int a;

5. DATA TYPE
C++ DATA TYPES
USER-DEFINED TYPE BUILT-IN TYPE DERIVED TYPE
INTEGRAL TYPE VOID FLOATING TYPE
STRUCTURE
UNION
CLASS
ENUMERATION
ARRAY
FUNCTION
POINTER
int char float double

6. BUILT IN DATA TYPE
C++ DATA TYPES
BUILT-IN TYPE
INTEGRAL TYPE VOID FLOATING TYPE
int char float double

7. BUILT IN DATA TYPE
INTEGRAL DATA TYPE
INTEGER DATA TYPE:
Keyword: int
Storage space: two bytes
Range of int: -32768 to 32767
LONG INT
INT
SHORT INT
SOME OF THE TYPES OF
INT

8. BUILT IN DATA TYPE
INTEGRAL DATA TYPE
CHARACTER DATA TYPE:
Keyword: char
Storage space: 1 byte
Range of char: -128 to 127

9. BUILT IN DATA TYPE
FLOATING DATA TYPE
FLOAT DATA TYPE:
Keyword: float
Storage space: 4 bytes
Range of float: 3.4e-38 to 3.4e+38.

10. BUILT IN DATA TYPE
FLOATING DATA TYPE
DOUBLE DATA TYPE:
Keyword: double
Storage space: 8 bytes
Range of double: 1.7e-308 to 1.7e+308.
LONG DOUBLE
DOUBLE
FLOAT
FLOATING TYPES

11. BUILT IN DATA TYPE
VOID DATA TYPE
Type void was introduced in ansi c.
Two normal use of void:
 To specify the return type of a function when
it is not returning any value.
 To indicate an empty argument list to a
function.
 Eg:- void function-name ( void )

12. USER DEFINED TYPE
C++ DATA TYPES
USER-DEFINED TYPE
STRUCTURE
UNION
CLASS
ENUMERATION

13. USER DEFINED TYPE
STRUCTURES:
Structures are used for grouping together
elements with dissimilar types.
The general syntax of a structure:-
Struct name
{
Data_type member1;
. . . . .
};

14. USER DEFINED TYPE
Unions:
Unions are conceptually similar to structures
as they allow us to group together dissimilar
type elements inside a single unit.
The size of union is equal to the size of its
largest member element.

15. USER DEFINED TYPE
CLASSES:
The entire set of data and code of an object
can be made a user-defined data type with the
help of a classes
Once a class has been defined, we can create
any number of objects belonging to that class.
Example: fruit mango;
Will create an object mango belonging to the
class fruit.

16. USER DEFINED TYPE
ENUMERATED DATA TYPE:
An enumerated data type is another user
defined data type which provides a way for
attaching numbers to names.
General syntax of enumerated data type is:-
enum identifier
{
Value1,valu2,………….,Valuen
};

17. DERIVED TYPE
C++ DATA TYPES
DERIVED TYPE
ARRAY
FUNCTION
POINTER

18. DERIVED TYPE
ARRAYS:
An array is a fixed sequence collection of
elements of same data type that share a
common name.
General syntax to declare is
data_type name[size];
General syntax to initialize is
for(i=0;i<=10;i++)
cin>>a[i];

19. DERIVED TYPE
FUNCTIONS:
 A function is a group of statements that together
perform a task.
Every c++ program has at least one function,
which is main().
void main()
{
Statements;
}

20. DERIVED TYPE
POINTERS:
A pointer is a variable that holds a memory
address.
General syntax to declare pointer is:-
Data_type *pointer_name;
Example:
int *p;

21. SUMMARY
 Structures are used for grouping together
elements with dissimilar types.
 Unions are conceptually similar to structures as
they allow us to group together dissimilar type
elements inside a single unit.
 Once a class has been defined, we can create
any number of objects belonging to that class.
 An enumerated data type is another user
defined data type which provides a way for
attaching numbers to names.

22. SUMMARY
 An array is a fixed sequence collection of
elements of same data type that share a
common name.
 A function is a group of statements that
together perform a task.
 A pointer is a variable that holds a memory
address.

23. THANK YOU