C++ How To Program Plus Mylab Programming With Pearson Etext -- Access Card Package (10th Edition)
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Chapter 9, Problem 9.3E
Program Plan Intro

Scope Resolution Operator:

In C++, the double colon “::” is called scope resolution operator. The purpose of the scope resolution operator is:

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Explanation of Solution

Explanation:

  • If, in a program, there is a local variable with the same name as global variable, then while compiling, the complier uses the local variable. In order to access the global variable, user must prefix the variable name with “:: variable name”.
  • To define a function outside a class.
  • If user wants to access static variables of a class.
  • If, in two classes, there are same variable names, then, to distinguish, scope resolution operator is used. That means, for multiple inheritance, scope resolution operator is used.

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