What is Namespace in C++ Programming | Namespace STD in C++ | Intellipaat

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In this video on What is Namespace in C++ Programming, you will learn about one of the most commonly used keywords in the C++ programming language, namespace.
🔵 Following topics are covered in this session:
0:00 - Introduction to Namespace in C++ Programming
0:58 - What is Namespace?
2:20 - What is Std?
2:52 - Different Ways To Use Namespace
4:02 - Nested Namespace
4:28 - HandsOn
✅What is namespace in C++ with example?
Namespace in C++ is the declarative part where the scope of identifiers like functions, the name of types, classes, variables, etc., are declared. The code generally has multiple libraries, and the namespace helps in avoiding the ambiguity that may occur when two identifiers have the same name.
✅What is namespace used?
The namespace keyword is used to declare a scope that contains a set of related objects. You can use a namespace to organize code elements and to create globally unique types.
✅How many namespaces are there in C++?
There are three main namespaces. The ISO C++ standards specify that "all library entities are defined within namespace std." This includes namespaces nested within namespace std , such as namespace std::chrono . Specified by the C++ ABI.
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