How are Exceptions Handled generally in any programming language? [closed] - c++

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What changes does it happen in the program when the exception is caught? How does thrown exception is caught in nearest catch block.

Well, I tried implementing simple exception-handling in C 2 years ago. Let me show it to you.
https://github.com/dlarudgus20/CTryCatch
(In fact, I made the github repository to practice as soon as I saw you question - it's my first repository >o< Thank you to give me the opportunity to use github!)

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How to get catch regex group in ZSH? [closed]

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I have an if statement with regex, and I catch some groups in order to check the values.
So I'd like to know the equivalent of $BASH_REMATCH[$i] in ZSH.
Charles Duffy gave me answers to this question with a link telling me that the equivalent is $match[$i].
Thanks to him, and to the other advices he gave me.

why are c++ functions designed to has exceptions by default? [closed]

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If a c++ function has no exception, I have to write noexcept explicitly; if a c++ has exceptions, I don't have to write anything. Why not just the opposite? If a c++ function has exceptions, I have to write except explicitly; if a c++ has no exception, I don't have to write anything.
Writing a C++ function that you are 100 % certain will not throw an exception is far from easy and requires a thorough dedicated attention.
I consider I am allowed to write this noexcept keyword as the reward.

What is zero overhead principle in C++? Examples? [closed]

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When I am reading design goals of C++11, it mentioned about zero-overhead principle without any examples or features which uses this principle. I can understand that it could be there to avoid degrading existing code performance. But,
Can someone explain this concept with some examples?
Approach they made to implement such a feature in the standard?
How they enforce compiler-writers to implement this?

Why is following the standard considered to produce unreadable code or to be impossible? [closed]

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I was reading this post: https://stackoverflow.com/questions/1025494/obfuscating-c-c-code
The question is:
What tools are available to obfuscate C/C++ code....
An answer which had a bounty awarded to it says:
Follow the Standard insanely.
That'll be enough :)
I don't understand why people say following the standard would produce unreadable code or is impossible. Can someone explain what people mean in that post ? I'm a beginner programmer (in C / C++)

How to write a menu driven program in C++ without using a switch case. [closed]

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I'm trying to write a menu driven program without using switch case but I'm not getting to a conclusion on which statement to use. Let me know if any one is having an answer.
You want to learn about the Command design pattern. It is a very good candidate for designing menu items without relying on large switch blocks.
http://en.wikipedia.org/wiki/Command_pattern