C++ Auto Keyword Guide: Types & Usage

In C++, the auto keyword is used to automatically deduce the type of a variable. It can automatically determine the type of a variable based on its initialization expression, making the code more concise and readable. Using the auto keyword can avoid explicitly specifying the type of a variable, especially when dealing with complex types or using templates, which can reduce code redundancy. Additionally, the auto keyword can also conveniently handle situations like iterator and template type deduction.