
<ul style="margin-left: -15px;">
<li>
<b>Sequence Containers</b>, 
</li>
<li>
<b>Associative Containers</b>, and 
</li>
<li>
<b>Container Adaptors</b>. 
</li>
</ul>
<div class="image-550">
<img src="https://cdn.kahimyang.com/resources-24/stl-container.avif" alt="STL Containers" loading="lazy" />
</div>
<p>
In this article, we will explore each category and provide two complete examples for each.
</p>

<h3>
Sequence Containers
</h3>
<p>
Sequence containers store elements in a linear sequence, meaning elements are arranged in a strict linear order. The most commonly used sequence containers are <b>std::vector</b>, <b>std::list</b>, and <b>std::deque</b>.
</p>

<h4>
Example 1: std::vector
</h4>
<p>
std::vector is a dynamic array that can resize itself automatically when elements are added or removed.
</p>

<pre style="font-size: 90%;">
<code class="language-cpp normalize-whitespace line-numbers" >
#include &lt;iostream>
#include &lt;vector>

int main() {
    // Create a vector of integers
    std::vector&lt;int> vec = {10, 20, 30};

    // Add elements to the vector
    vec.push_back(40);
    vec.push_back(50);

    // Access elements using iterators
    std::cout &lt;&lt; "Vector elements: ";
    for (auto it = vec.begin(); it != vec.end(); ++it) {
        std::cout &lt;&lt; *it &lt;&lt; " ";
    }
    std::cout &lt;&lt; std::endl;

    // Access elements using index
    std::cout &lt;&lt; "Element at index 2: " &lt;&lt; vec[2] &lt;&lt; std::endl;

    return 0;
}
</code>
</pre>
<p>
Output:
</p>

<pre style="font-size: 90%;">
<code class="language-text normalize-whitespace line-numbers" >
Vector elements: 10 20 30 40 50 
Element at index 2: 30
</code>
</pre>



C++ Standard Template Library (STL) Containers Explained