There are different types of capacity in a vector which are as follows: Capacity: The member function constitutes a vector's size and capacity in C++.There are different types of iterators in vector containers which are as follows: Iterators: Iterators are used to traverse and locate vectors, that are why contiguous memory is allocated to a vector to store the elements.The vector class contains different member functions, just like other STL containers. That's why using a vector instead of a static array is beneficial. In the case of a static array, we cannot insert elements once it is full, but when the size of a vector becomes full, it doubles its size from the original. Deletion takes constant time, while insertion takes differential time as a vector needs to resize after accumulating the element. The process of inserting and deleting elements starts from the last index to the first one. To use Vector inside a C++ program, we have to include and header file. Vectors are STL containers with a special feature to increase or decrease the size considering the requirement of insertion and deletion inside a program. They are used to store the elements dynamically. Vector is part of the C++ Standard Template Library. Iterators allow generality in the standard template library. Iterators, as the name suggests, work upon a sequence of values. Functionsįunctions are the instance of classes present in the STL that can overload the function call operator. Several types of containers are available in STL, like vector, arrays, queue, list, etc. ContainersĬontainers, also known as Container classes, are used to store data and objects. There are several algorithms present in STL, such as Sorting algorithms, Searching algorithms, etc. They provide different operations that are to be performed on the elements of a container. STL in C++ is a library that uses different functions and data structures relatively easily.Īlgorithms are the collection or group of different functions used to work on various elements. In C++, we have the Standard Template Library, a set of template classes that provides access to common data structures and functions like the stack, arrays, lists, etc. Introduction to C++ Vector Resize Functionīefore learning about the C++ vector resize method, let's learn about STL. C++ vector resize method is defined in the and header file, which has to be included in the programs where the resize method will be used. The C++ vector resize method is a built-in STL function (capacity function) used to manipulate a vector's size by inserting or deleting elements from the vector. Capacity is the member function that constitutes the size and capacity of a vector in C++.
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