![]() ![]() The size of the containers can change, so you don't need to specify their maximum size from the beginning. If you find that you add or remove data often, then vectors are the prefered way to handle those dynamic elements, since they are able to resize themselves automatically.Īs mentioned earlier, vectors are not fixed-sized, so that makes them ideal to use when you don't know the size of your data beforehand and when your data is not established in advance. The container's size is not set - instead it grows and shrinks dynamically.ĪDVERTISEMENT Why and when to use a Vector in C++Ĭonsider using vectors when you're working with constantly changing data. Unlike arrays in C that have a static, rigid, and fixed size, vectors are sequenced containers that store dynamic collections of data elements. They are a more flexible, refined, and efficient replacement for arrays, which are used in the C programming language (and on which the C++ language is based). Vectors, or std::vector, are a template class in the STL (Standard Template Library). Vectors in C++ are a simple and effective way of storing data and keeping it organized. ![]() That data could be a list of books you have read throughout the year, or payment options for meals at a restaurant, or simply a list of names - the data can be of any kind.īut how do you store those groups of data? Programs need groups of data in order for them to do just about anything. It will show you some of their basic and essential features to help you get started with your learning. This article is a beginner friendly introduction to vectors. They also help you avoid having to deal with the not so flexible arrays that are inherited from the C programming language. Vectors in C++ are a helpful way to store dynamic data.
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