commit 6be81d2d733ef8332185089ebdca06054be81406
Author: jakob.schratter <jakob.schratter@noreply.imsc.uni-graz.at>
Date:   Wed Oct 22 15:16:25 2025 +0200

    Upload files to "ex1A_mean_values"

diff --git a/ex1A_mean_values/main.cpp b/ex1A_mean_values/main.cpp
new file mode 100644
index 0000000..03da30f
--- /dev/null
+++ b/ex1A_mean_values/main.cpp
@@ -0,0 +1,35 @@
+#include "means.h"
+#include <vector>
+#include <iostream>
+using namespace std;
+
+int main(int argc, char **argv)
+{
+    double arithmetic_mean, geometric_mean, harmonic_mean;
+
+    // Fixed version
+    calculate_means(1, 4, 16, arithmetic_mean, geometric_mean, harmonic_mean);
+    cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
+
+    calculate_means(2, 3, 5, arithmetic_mean, geometric_mean, harmonic_mean);
+    cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
+
+    calculate_means(1000, 4000, 16000, arithmetic_mean, geometric_mean, harmonic_mean);
+    cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
+    cout << "--------------------------------" << endl;
+
+
+    
+    // Scalable version
+    calculate_means(vector<int> {1, 4, 16}, arithmetic_mean, geometric_mean, harmonic_mean);
+    cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
+    
+    calculate_means(vector<int> {2, 3, 5}, arithmetic_mean, geometric_mean, harmonic_mean);
+    cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
+
+    calculate_means(vector<int> {1000, 4000, 16000}, arithmetic_mean, geometric_mean, harmonic_mean);
+    cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
+    
+    
+    return 0;
+}
diff --git a/ex1A_mean_values/means.cpp b/ex1A_mean_values/means.cpp
new file mode 100644
index 0000000..903a9e2
--- /dev/null
+++ b/ex1A_mean_values/means.cpp
@@ -0,0 +1,30 @@
+#include "../ex1A_mean_values/means.h"
+#include <cmath>
+#include <vector>
+
+void calculate_means(int a, int b, int c, double &am, double &gm, double &hm)
+{
+    am = (a + b + c)/3.0;
+    gm = exp((log(a)+log(b)+log(c))/3);
+    hm = 3.0/(1.0/a + 1.0/b + 1.0/c);
+}
+
+void calculate_means(std::vector<int> numbers, double &am, double &gm, double &hm)
+{
+    int n = numbers.size();
+
+    am = 0.;
+    gm = 0.;
+    hm = 0.;
+
+    for (int i = 0; i < n; ++i)
+    {
+        am += numbers[i];
+        gm += log(numbers[i]);
+        hm += 1.0/numbers[i];
+    }
+
+    am /= n;
+    gm = exp(gm/n);
+    hm = n/hm;
+}
\ No newline at end of file
diff --git a/ex1A_mean_values/means.h b/ex1A_mean_values/means.h
new file mode 100644
index 0000000..4a12964
--- /dev/null
+++ b/ex1A_mean_values/means.h
@@ -0,0 +1,23 @@
+#pragma once
+#include <vector>
+
+/**
+  This function calculates arithmetic mean, geometric mean and harmonic mean of three integers.
+  @param[in]    a            first integer
+  @param[in]    b            second integer
+  @param[in]    c            third integer
+  @param[out]   am           arithmetic mean
+  @param[out]   gm           geometric mean
+  @param[out]   hm           harmonic mean
+*/
+void calculate_means(int a, int b, int c, double &am, double &gm, double &hm);
+
+/**
+  This function calculates arithmetic mean, geometric mean and harmonic mean of an integer vector.
+  @param[in]    numbers      vector containing integers
+  @param[out]   am           arithmetic mean
+  @param[out]   gm           geometric mean
+  @param[out]   hm           harmonic mean
+*/
+void calculate_means(std::vector<int> numbers, double &am, double &gm, double &hm);
+