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This article mainly explains "how to understand the default parameters of C++", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn "how to understand the default parameters of C++".

What is the default parameter?

The default parameter is to specify a default value for the function's parameters when you declare or define the function. When calling the function, the default value is used if no argument is specified, otherwise the specified argument is used.

Note: to omit parameters, default values must be specified in the declaration or definition.

Void TestFunc (int a = 0) {cout

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