How do I initialize a vector in C++11?

How do I initialize a vector in C++11?

In C++11, you can initialize a vector using the initializer list syntax. For example: std::vector<int> vec = {1, 2, 3};.

Can I initialize a vector with a specific size and default value?

Yes, you can initialize a vector with a specific size and a default value like this: std::vector<int> vec(5, 10); which creates a vector of size 5 with all elements set to 10.

What about using the push_back method?

You can use push_back to add elements to the vector after it has been initialized. For example: vec.push_back(4); adds 4 to the end of the vector.

Are there any differences between std::vector and arrays?

Yes, std::vector is dynamic and can resize, while arrays have a fixed size. Vectors also provide more functionality.