C++ Practice Problems

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

bool cekKurungValid(const std::string&amp; s) {
    std::stack&lt;char&gt; st;
    for (char c : s) {
        if (c == '(' || c == '[' || c == '{') {
            st.push(c);
        } else {
            if (st.empty()) return false;
            char top = st.top();
            st.pop();
            if ((c == ')' &amp;&amp; top != '(') ||
                (c == ']' &amp;&amp; top != '[') ||
                (c == '}' &amp;&amp; top != '{')) return false;
        }
    }
    return st.empty();
}

int main() {
    std::string ekspresi = "{[()]}";
    std::cout &lt;&lt; "Cek Validitas Kurung: " &lt;&lt; ekspresi &lt;&lt; "\n";
    std::cout &lt;&lt; "Status: " &lt;&lt; (cekKurungValid(ekspresi) ? "VALID SEIMBANG" : "TIDAK VALID") &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;">Cek Validitas Kurung: {[()]}<br>Status: VALID SEIMBANG</div>
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