How to create an array in which the number of elements is not indicated and add values ​​to it?

Question

How to create an array in which the number of elements is not indicated and add values ​​to it?

Answer 1

Probably best solution is using a <vector>

Vectors, dictionaries and sets
https://code.sololearn.com/cSgsI0LJ8K5b/?ref=app
https://code.sololearn.com/cB6Rx7P3Ccwn/?ref=app
https://code.sololearn.com/cuTmAyo497Oe/?ref=app

Answer 2

What language?

Answer 3

C++