What is the size of class
- 18 Answers
- 24473 Views
- Aircom, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / suresh
Size of an emty class is One Byte. If it has variables the
sum of size of variables If it has Virtual functions
Compiler inserts VPTR. So the size includes VPTR which is 4
bytes
| Is This Answer Correct ? | 24 Yes | 2 No |
Answer / mvs ravi kumar
Size of all variables present in a class
Plus
add size of int for each virtual function if present.
If the class is an empty class then its size is one byte.
This is because to differentiate between two different
objects of that class.
| Is This Answer Correct ? | 25 Yes | 5 No |
Answer / raghu
#include <iostream.h>
class A
{
};
void main(int argc,char *argv[])
{
A a;
cout << " Size of Class A's object 'a' is = " <<
sizeof(a);
return;
}
Ans: Size of Class A's object 'a' is = 1
| Is This Answer Correct ? | 22 Yes | 2 No |
Answer / ratnesh sachan
Size of an object of an empty class is one otherwise the
size of the class is equal to the sum of the size of the
variables of that class. The size of class dose not depend
on the functions of that class.
| Is This Answer Correct ? | 7 Yes | 6 No |
Answer / amrit
If class is no member function and member variables its size
will be i byte ,if it have both then size will be addition
of all member variables but when the function is virtual
then it take 4 bytes for it ,if class have more than one
virtual function then size for all the virtual function not
include,it only include first virtual function size which
is 4 bytes.
| Is This Answer Correct ? | 4 Yes | 3 No |
Answer / saisumanth.nimmagadda
i think size of the class is 1byte
| Is This Answer Correct ? | 1 Yes | 0 No |
The defoult size of an object is one bite.becouse every
object contains a distinct adress.
class a
{
};
main()
{
a obj;
}
Here the size of obj is one bite.
| Is This Answer Correct ? | 4 Yes | 5 No |
Answer / preeti
The size of class is equal to size of member variables
present in that class.
EXAMPLE:-
class abc
{
public int x;
};
void main()
{
abc a;
cout<<sizeof(a) ;
}
| Is This Answer Correct ? | 1 Yes | 2 No |
What is a message map, and what is the advantage of a message map over virtual functions?
Explain Doc/View architecture
What MFC base classes provide support for ActiveX controls?
visual Pogramming c++ coding for create a paint application.. (Please someone help me)
what if we provide two message handler for same message ?
What is the difference between OnInitialUpdate and OnUpdate?
Tell me the different controls in MFC ?
Does the application have more than one object? If Yes, Briefly explain.
what is the use of Mutex and critical section
Which CPrintInfo member variable must be set for multiple page printouts?
2.create for 10 batch: Employee_Number Employee_name Employee_Dateofjoining Employee_address Employee_salary 1.select the employee name who deriving more than 10 thousand salary and joined before august 08. use structure and pointers
How can update edit control data of an executing application from other application?
MFC 
