C++ allows us to manage resources almost at the hardware level, and someone, somewhere, must indeed manage them at this level. The latter is actually true for every language, even the high-level ones that do not expose such details to the programmers. But the somewhere does not have to be in your program! Before we learn the C++ solutions and tools for resource management, let's first understand the problems that arise from not using any such tools.
Dangers of manual resource management
Manual resource management is error-prone
The first and most obvious danger of managing every resource manually, with explicit calls to acquire and release each one, is that it is easy to forget the latter. For example see the following...
