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This article deals with the functions of the Template Class array. The template class states two arguments. First of all is the type of the elements that the object will hold and the second is the number of elements. Thus, like a C-style array, an array object holds a fixed-size array of objects. In addition, an array object can be initialized with an aggregate initializer, just like a C-style array. Hence, an array or class type is not an aggregate if it has any user-declared constructors or any private and protected non static data members.

The article summarizes the generally accepted riles for the use of free C++ computer software friend functions and classes. There is a long-standing prejudice in the C++ community against declaring friend functions and classes. One factor in this prejudice is friendship's lack of granularity. A class grants its friends access to every detail of its implementation, which seem to violate the spirit, if not the letter of encapsulation. Hence, the whole point of friendship is to allow coupling when appropriate.