How do I use constructors with std::vector in C++11?

Can you explain how to use constructors with std::vector in C++11?

Sure! In C++11, you can initialize a std::vector using various constructors. For example, you can create a vector with a specific size and default value.

What are the different ways to initialize a std::vector?

You can initialize a std::vector using the default constructor, a fill constructor, or by using an initializer list.

Can you give me an example of using an initializer list?

Absolutely! You can create a vector like this: std::vector<int> vec = {1, 2, 3, 4}; This initializes the vector with four elements.

What happens if I try to access an out-of-bounds index?

Accessing an out-of-bounds index will lead to undefined behavior. It's best to use the .at() method, which throws an exception.