Understanding Static Data Member Initialization
In C , static data members play a crucial role in defining class attributes that remain common to all instances of the class. However, a common question arises regarding the necessity for their initialization to be outside the class definition.
Why Initialization Outside the Class?
Static data members must be initialized outside the class for two key reasons:
Why is a Static Data Member in the Class a Declaration Only?
Despite the syntax suggesting a definition, the static data member within the class is only a declaration. The reason lies in a static data member's fundamental nature:
Therefore, the definition of a static data member must occur outside the class, ensuring that it exists with a single address across all instances of the class.
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