Volatile
Explore the volatile keyword in C++ to understand how it designates variables that may change outside normal program flow. Learn why it differs from std::atomic and how volatile ensures direct memory access, which is crucial for embedded systems and handling external I/O events.
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Definition #
The volatile variable is one whose value may change due to an external event.
Usually, we can only change the value of a variable within our code. Let’s say there is an external I/O event that tries to change the value of the variable. This would not be allowed.
However, it would be possible if the variable was volatile. A volatile variable can be declared using the ...