Description: A forward declaration in C++ is a statement that informs the compiler about the existence of a class, function, or variable before its complete definition. This is particularly useful in situations where dependencies between different parts of the code can cause compilation issues. By declaring a function or class in advance, the programmer can organize the code more flexibly, allowing functions to be called before they are defined in the file. Forward declarations are essential for creating more complex programs, where interactions between multiple modules or code files are common. Additionally, they enhance code readability and maintainability, as they allow developers to understand the overall structure of the program without needing to read each definition in detail. In summary, forward declaration is a key tool in C++ programming that helps manage complexity and improve code organization.
