Explanation: In the above program, the classdata has three member variables of long,
float, and char type. The d1 and d2 are objects of the classdata. The sizeof operator
displays the size of objects. The size of any object is equal to the sum of sizes of all the data mem-
bers of the class. In the class data, the data type long occupies 4 bytes, float occupies 4
bytes, and char occupies 1 byte. Their sum is 9, which equals the size of an individual object.
The member functions are not considered in the size of the object. All the objects of a class
use the same member functions. Only one copy of member function is created ...
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