Different B/W CLASSES & STRUCTUR in C\C++

[mani]

Hi 2 All,

i want 2 know that what is the major different in Structur and Class in C\C++ programming language. what r the Advantages and Disadvantages of then

[outstream]

one of the biggest difference just came to mind is..classes support inheritence, structures dont.. is that a homework question by the way?

[saquib_javed]

Salam,

Please check for Object Oriented is.

Do refer to book C How to program Deitel & Deitel
http://www.deitel.com/

http://webopedia.com/TERM/o/object_oriented.html

ThanX

[lambda]

i want 2 know that what is the major different in Structur and Class in C\C++ programming language. what r the Advantages and Disadvantages of then

is this a homework question?

[soni]

structures do allow inheritance....

Code: Select all

#include <stdio.h>

struct father{

    father(){
       printf("In the father....\n");
    }  
    int scalar;  

};

struct child : father{

    child(){
       printf("In the child....\n");
       this->scalar = 20; 
    }  

};


main(void){

   struct child obj;

   printf("%d\n", obj.scalar);

}

struct{
//default member access....
public:
};

class{
//default member access....
private:
};

[lambda]

struct{
//default member access....
public:
};

class{
//default member access....
private:
};

that's correct -- soni wins.

[salmankhilji]

Hi 2 All,

i want 2 know that what is the major different in Structur and Class in C\C++ programming language. what r the Advantages and Disadvantages of then

In C++, struct and class is EXACTLY the same semantically. Inheritance and polymorphism work EXACTLY the same on both.

The only difference is what is private and public be default. In a struct everything is public by default. However, there is nothing to stop you from specifying public: to make everything public. In a class, everything is private by default. However you can specify private: to achieve the same effect.

Some older compilers allow interchaning the keyword struct and class. i.e you can forward declare something to be struct and later define the thing as a class instead. These compilers, noticeably VC++ will generate a warning only. Other compilers simply will refuse to do so.

HTH,

Salman

[ishtiaq ahmed]

actually brother u should have asked question like this, the difference between object oriented approach and the structural.

so basic difference between them is that oo approach is like a human eye that it is a object which contain attributes like ball and so on . and its function to. as in case of class object.

while in case of structural approach its not the case.


that is the very basic difference between them. i liked this example very much when i read that first time. so i am sharing it with u.

[lambda]

so basic difference between them is that oo approach is like a human eye that it is a object which contain attributes like ball and so on . and its function to. as in case of class object.

while in case of structural approach its not the case.

let's use your method of reasoning in another matter, shall we?

q. what is the difference between cars and trains?
a. the basic difference is that cars have four wheels, a driver's seat with a steering wheel, a gear shift, and two or three pedals. while in the case of a train, that is not the case.

does that tell you what a train is?


anyway, your description is incorrect. the main difference between object-oriented programming and procedural programming is that in oop you put your code and the data used by that code in the same "place." in procedural programming, the code and data are not bound together as tightly as they are in oop.

however.

even that's not an accurate description, because in some languages, which are completely object oriented from the ground up, the code is still separate from the data. see this for a description of many things that are called "object-oriented".

[soni]

Brothers donot waste your time in arguments, do the real thing, the OOP dance and chill.....