C++11 auto

[jwkNwA7f]

How can I use auto in C++11? I have just started learning the new features in C++11.

Thank you!

[Daleth]

auto just deduces the type based on initialization.

auto integer = 3; //int
auto character = 'g'; //char
auto decimal = 3.4; //double 

It's typically useful for long typenames, e.g.

//Instead of
std::vector<std::list<std::chrono::nanoseconds> > raw_data;
std::vector<std::list<std::chrono::nanoseconds> >::iterator
   trial_iter = raw_data.begin();
//You can use
auto trial_iter = raw_data.begin();

[jwkNwA7f]

I think I understand.

So, it can be a character, integer, float, or other variable depending on the value assigned to it?

[Daleth]

Yup. If you are interested:
http://www.cprogramming.com/c++11/c++11-auto-decltype-return-value-after-function.html

[jwkNwA7f]

Okay, thank you for your help!