Dive into namespaces and libraries from "summary" of C/C++ Programmer's Reference by Herbert Schildt
When you write a program in C or C++, you will almost certainly be using libraries. Libraries contain prewritten code that performs a variety of tasks. By using a library, you can save yourself the time and effort of writing that code yourself. Instead, you can simply call the appropriate functions from the library. Namespaces are used to organize code into logical groups. This helps prevent naming conflicts and makes your code easier to understand. When you use a library in your program, you are effectively adding new functionality to it. For example, if you need to work with dates and times, you might use the <ctime> library. This library provides functions for working with dates and times, such as determining the current date and time or calculating the difference between two dates. Namespaces are a way to group related code together. For example, the <ctime> library puts all of its functions and types inside the std namespace. This means...
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