Added a polyeval polyalgo

c++/pingadd.cpp

@@ -0,0 +1,59 @@
+// ping_cmd.cpp
+// Versi portable: memanggil utilitas 'ping' dari sistem dan mengambil waktu round-trip.
+// Works on Linux/macOS. On Windows change "-c 1" to "-n 1".
+// Compile: g++ -std=c++11 ping_cmd.cpp -o ping_cmd
+
+#include <iostream>
+#include <string>
+#include <array>
+#include <memory>
+#include <regex>
+#include <cstdio>
+
+int main(int argc, char* argv[]) {
+    if (argc != 2) {
+        std::cerr << "Usage: " << argv[0] << " <host-or-ip>\n";
+        return 1;
+    }
+
+    std::string host = argv[1];
+
+    // For Linux/macOS use "-c 1". For Windows change to "-n 1".
+    std::string cmd = "ping -c 1 " + host + " 2>&1";
+
+    // Run command and capture output
+    std::array<char, 128> buffer;
+    std::string result;
+    std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd.c_str(), "r"), pclose);
+    if (!pipe) {
+        std::cerr << "Failed to run ping command\n";
+        return 1;
+    }
+    while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) {
+        result += buffer.data();
+    }
+
+    // Print raw output if you want:
+    // std::cout << result << "\n";
+
+    // Try to extract time=... ms using regex (common ping output)
+    std::smatch m;
+    std::regex r_time("time=([0-9]+\\.?[0-9]*)\\s?ms");
+    if (std::regex_search(result, m, r_time)) {
+        std::cout << "Reply from " << host << ": time=" << m[1] << " ms\n";
+        return 0;
+    }
+
+    // On some systems ping prints "Average = Xms" in a different line
+    std::regex r_time_win("Average = ([0-9]+)ms");
+    if (std::regex_search(result, m, r_time_win)) {
+        std::cout << "Reply from " << host << ": time=" << m[1] << " ms (avg)\n";
+        return 0;
+    }
+
+    // If nothing matched, show failure and raw output snippet
+    std::cout << "No reply / unable to parse time. Raw output:\n";
+    std::cout << result << "\n";
+
+    return 2;
+}

polyeval.py

@@ -0,0 +1,17 @@
+def poly_eval(coeffs, x):
+    """
+    Evaluate a polynomial using Horner's method.
+    coeffs: list of coefficients, highest degree first
+    x: the value at which to evaluate the polynomial
+    Example: 2x^3 + 3x^2 - 5x + 7 -> coeffs = [2, 3, -5, 7]
+    """
+    result = 0
+    for coef in coeffs:
+        result = result * x + coef
+    return result
+
+if __name__ == "__main__":
+    coeffs = [2, 3, -5, 7]  # 2x^3 + 3x^2 - 5x + 7
+    x = 4
+    print(f"Polynomial coefficients: {coeffs}")
+    print(f"Value of polynomial at x={x}: {poly_eval(coeffs, x)}")