Explain the volatile and mutable keywords in C/C++ with an example?

Answer 1

A variable marked with keyword mutable allows for it to be modified in a method declared const.
This means...
Mutable interacts with const. If we have a const pointer, we normally could not change members. Mutable provides an exception to that rule.

A variable marked with keyword volatile tells the compiler that it must read/write the variable every time.

Comments

ariables prefixed with the keyword volatile acts as a data type qualifier. The volatile keyword attempts to alter the default way in which the variables are stored and the way the compiler handles the variables.
It is a kind of instruction to the optimizer to not to optimize the variables during compilation.

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