Auto Type Deduction

auto is a keyword in C++ introduced in C++11 that enables automatic type deduction. It allows the compiler to infer the data type of a variable from its initialization expression at compile time. This simplifies code by reducing the need to explicitly declare types, particularly when dealing with complex or less predictable types, leading to cleaner and more maintainable code. In C++14, auto can also be used to deduce function return types based on the return expression.