Vector push_back() in C++ STL

In C++, the vector push_back() is a built-in method used to add a new element at the end of the vector. It automatically resizes the vector if there is not enough space to accommodate the new element.

Let’s take a look at an example that illustrates the vector push_back() method:

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This article covers the syntax, usage, and common examples of the vector push_back() method in C++:

Syntax of Vector push_back()

The vector push_back() is a member method of the std::vector class defined inside the <vector> header file.

v.push_back(val);

Parameters:

• val: Element to be added to the vector at the end.

Return Value:

• This function does not return any value.

Examples of vector push_back()

The following examples demonstrate the use of the vector push_back() function for different purposes:

Initialize an Empty Vector One by One

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Add Elements Vector of Strings at the End