Difference between structure and class

Structure	Class
Structure use public modifier by default	Class use private modifier by default
In concept of inheritance, derived structure is public by default when access modifier doesn’t use in base class.	In case of class concept, derived class is private by default when access modifier doesn’t use in base class.
Use ‘struct’ keyword in language c, c# and ‘structure’ keyword use in VB for implementing structure block	Use ‘class’ keyword for implementing class block.
Structure is a collection of bits.	Class is a collection of members of society.
Structure is based on procedural approach	Class is based on object-oriented approach.
It doesn’t support Data hiding concepts. Means you can’t implement security in it.	You can implement security in it Using data hiding.
It is a value type	It is reference type
Size of empty structure is 0 byte	Size of empty class is 1 byte
In case of template, we can’t use it.	Always we use class in case of structure.
template<struct T> // ERROR, struct not allowed here	template<class T> // OK
Structure may represent real world object.	Class is highly suitable to represent real world objects rather than "Structures"
Structure value will be stored in stack memory	Class members are stored in heap memory.
Structure used for light weight object.	Class is used for complex data type