What is the difference between a class and a datatype?

Question

I have heard the following statement:

We can say class is a datatype or a datatype is one type of class.

Can anyone explain to me wh

Answer 1

A class is a type of a data type. It allows you to declare a variable along with its datatype. E.g.:

class big  
{  
    public int a;  
    .......  
    ......    
}    

Here, int is a data type and big is the class name.

Hope you got little idea about it!