Added template for Newton

And placed horner into horner/ folder

.gitignore

@@ -0,0 +1,2 @@
+
+*.out

newton/input.txt

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+1 2
+1.5 2.5
+2 3.5
+2.5 4

newton/main.cpp

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+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <vector>
+
+using namespace std;
+
+class Newton
+{
+public:
+    void readFromFile(string filename)
+    {
+        string str;
+        // stopien = 0;
+
+        fstream file(filename);
+        if (!file)
+        {
+            cerr << "Nie udalo sie otworzyc pliku o nazwie: " << filename << "\n";
+            exit(EXIT_FAILURE);
+        }
+        while (getline(file, str))
+        {
+            std::istringstream iss(str);
+            if (iss >> a >> b) {
+                x.push_back(a);
+                y.push_back(b);
+            }
+        }
+        file.close();
+    }
+
+    void oblicz()
+    {
+
+    }
+
+    void wyswietl_x_y()
+    {
+        for (int i = 0; i < x.size(); i++)
+        {
+            cout << "x" << i << ": " << x[i] << "\t \t" << "y" << i << ": " << y[i] << "\n";
+        }
+    }
+
+    void wyswietl_tabela()
+    {
+        std::cout << std::setw(5) << "i" << std::setw(10) << "x" << std::setw(10) << "y" << std::endl; // Table headers
+        std::cout << std::string(26, '-') << std::endl;
+
+        for (size_t i = 0; i < x.size(); ++i)
+        {
+            std::cout << std::setw(5) << i << std::setw(10) << x[i] << std::setw(10) << y[i] << std::endl; // Table rows
+        }
+    }
+
+private:
+    float a, b;
+    vector<float> x ,y;
+};
+
+int main()
+{
+    Newton first;
+    first.readFromFile("input.txt");
+    // first.wyswietl_x_y();
+    first.wyswietl_tabela();
+    return 0;
+}