Double colon & quot;: & quot;, colon

Double colon ":", colon

Scope qualifier or operator,
":" It is used to declare the class of the function, and the class is used to declare the member function.

Void Student: display ();

A class Student is declared, and a member function void display () is declared in the class Student, but the display definition is not provided in the class declaration. When the display definition is defined outside the class,
Void Student: display () indicates that the display () function is a member function of Student class.

":" Role:
A. ID scope level
B. Identify the class to which the member belongs
C. Define the scope of a member
D. specify the scope.