Now we know how to create a vector, we can also initialize a vector, giving it values, as we are creating it in the same line.

For example, instead of just creating a double vector named location:

std::vector<double> location;

We can create and initialize location with specific values:

std::vector<double> location = {42.651443, -73.749302};

Here, we are storing a latitude and a longitude.

So it would look something like this:

Another way we can initialize our vector is by presizing, or setting the size.

Suppose we want to create and initialize a vector with two elements. However, we don’t know what values we want to add yet:

std::vector<double> location(2);

Here, we are creating a double vector and setting the initial size to two using parentheses.

It would look something like this:

Because 0.0 is the default value for double.