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What is the meaning of volatile variable in C/C++?

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What is the meaning of volatile variable in C/C++?
posted Jan 21, 2015 by Alwaz

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1 Answer

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Volatile variable:

Variables 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.

answer Jan 22, 2015 by Mohammed Hussain
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In large product based companies LLD is written by senior team members and developers write the code.
Does the senior team member decide what data type they should use in advance ? If yes then what things derives type of data for example. How they decide a variable should be declared as volatile ? and what would be advantage of having a variable volatile and what could be the problem if it is taken without the volatile ?

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