C++ <vector>

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        <span style="margin-left: 8px; font-weight: bold; color: #38bdf8;">⚙️ C++ <vector> - Skillance C++20</span>
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<span class="comment">// Skrip C++20 - Skillance Academy Indonesia</span>
#include &lt;iostream&gt;
#include &lt;vector&gt;

int main() {
    std::vector&lt;int&gt; v;
    v.reserve(100); // Alokasi kapasitas di muka tanpa menambah size

    std::cout &lt;&lt; "Kapasitas setelah reserve: " &lt;&lt; v.capacity() &lt;&lt; "\n";
    v.push_back(10);
    v.emplace_back(20); // Konstruksi elemen in-place (efisiensi C++11)

    std::cout &lt;&lt; "Ukuran aktif: " &lt;&lt; v.size() &lt;&lt; "\n";
    v.shrink_to_fit(); // Memangkas sisa kapasitas cadangan yang tidak terpakai
    std::cout &lt;&lt; "Kapasitas setelah shrink: " &lt;&lt; v.capacity() &lt;&lt; std::endl;
    return 0;
}
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        <div style="color: #64748b; margin-bottom: 6px;">[Terminal Output] &gt; g++ -std=c++20 main.cpp -o main &amp;&amp; ./main</div>
        <div style="color: #4ade80; font-weight: bold;">Kapasitas setelah reserve: 100<br>Ukuran aktif: 2<br>Kapasitas setelah shrink: 2</div>
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