commit d3ed218ee2e75a064a3534b1fcab5d4fdeb29bad
Author: Claudio Maggioni <maggicl@usi.ch>
Date:   Tue Sep 20 16:38:03 2022 +0200

    Added project0

diff --git a/Project0/src/fraction_summing/fraction_toolbox.cpp b/Project0/src/fraction_summing/fraction_toolbox.cpp
new file mode 100644
index 0000000..857c77e
--- /dev/null
+++ b/Project0/src/fraction_summing/fraction_toolbox.cpp
@@ -0,0 +1,74 @@
+#include <iostream>
+
+#include "fraction_toolbox.hpp"
+
+void print_fraction(fraction frac)
+{
+    std::cout << frac.num << '/' << frac.denom << std::endl;
+}
+
+void print_fraction_array(fraction frac_array[], int n)
+{
+    std::cout << "[ " << frac_array[0].num << '/' << frac_array[0].denom << std::endl;
+    for (int i = 1; i < n-1; i++)
+    {
+        std::cout << "  ";
+        print_fraction(frac_array[i]);
+    }
+    std::cout << "  " << frac_array[n-1].num << '/' << frac_array[n-1].denom << " ]" << std::endl;
+}
+
+fraction square_fraction(fraction frac)
+{
+    //TODO: implement function 2
+}
+
+//TODO: implement function 3
+
+
+double fraction2double(fraction frac)
+{
+    //TODO: implement function 4
+}
+
+int gcd(int a, int b)
+{
+    //TODO: implement function 5
+}
+
+//TODO: implement function 6
+
+
+void reduce_fraction_inplace(fraction & frac)
+{
+    //TODO: implement function 7
+
+    //TODO: add short comment to explain which of the gcd() functions your code is calling
+}
+
+fraction add_fractions(fraction frac1, fraction frac2)
+{
+    //TODO: implement function 8
+}
+
+double sum_fraction_array_approx(fraction frac_array[], int n)
+{
+    //TODO: implement function 9
+    
+    //TODO: add short comment to explain why this function is approximate
+}
+
+//TODO: implement function 10
+
+
+void fill_fraction_array(fraction frac_array[], int n)
+{
+    fraction temp_frac;
+    temp_frac.num = 1;
+    for (int i = 1; i <= n; i++)
+    {
+        temp_frac.denom = i * (i+1);
+        frac_array[i-1] = temp_frac;
+    }
+}
+
diff --git a/Project0/src/fraction_summing/fraction_toolbox.hpp b/Project0/src/fraction_summing/fraction_toolbox.hpp
new file mode 100644
index 0000000..8d3df39
--- /dev/null
+++ b/Project0/src/fraction_summing/fraction_toolbox.hpp
@@ -0,0 +1,27 @@
+#include <iostream>
+
+//TODO: implement fraction datatype
+
+void print_fraction(fraction frac);
+
+void print_fraction_array(fraction frac_array[], int n);
+
+fraction square_fraction(fraction frac);
+
+//TODO: add function declaration for function 3
+
+double fraction2double(fraction frac);
+
+int gcd(int a, int b);
+
+int gcd(fraction frac);
+
+//TODO: add function declaration for function 7
+
+fraction add_fractions(fraction frac1, fraction frac2);
+
+double sum_fraction_array_approx(fraction frac_array[], int n);
+
+fraction sum_fraction_array(fraction frac_array[], int n);
+
+void fill_fraction_array(fraction frac_array[], int n);
\ No newline at end of file
diff --git a/Project0/src/fraction_summing/main.cpp b/Project0/src/fraction_summing/main.cpp
new file mode 100644
index 0000000..e65eaed
--- /dev/null
+++ b/Project0/src/fraction_summing/main.cpp
@@ -0,0 +1,60 @@
+#include <iostream>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "fraction_toolbox.hpp"
+
+using namespace std;
+
+// read command line arguments
+static void readcmdline(fraction & frac, int argc, char* argv[])
+{
+    if (argc!=3)
+    {
+        printf("Usage: n d\n");
+        printf("  n        numerator of fraction\n");
+        printf("  d        denominator of fraction\n");
+        exit(1);
+    }
+
+    // read n
+    frac.num = atoi(argv[1]);
+
+    // read d
+    frac.denom = atoi(argv[2]);
+}
+
+static void test23467(int argc, char* argv[])
+{
+    //TODO: implement function
+}
+
+static void test5()
+{
+    //TODO: implement function
+}
+
+static void test_array_functions(int n)
+{
+    //TODO: implement function
+
+    //TODO: find n for which sum function breaks. Explain what is happening.
+}
+
+static void test_toolbox(int argc, char* argv[])
+{
+    cout << "\n===============  test23467  =============== " << endl;
+    test23467(argc, argv);
+
+    cout << "\n=================  test5  ================= " << endl;
+    test5();
+
+    cout << "\n==========  test_array_functions  ========= " << endl;
+    int n = 5;
+    test_array_functions(n);
+}
+
+int main(int argc, char* argv[])
+{
+    
+}
\ No newline at end of file
diff --git a/Project0/src/fraction_summing/makefile b/Project0/src/fraction_summing/makefile
new file mode 100644
index 0000000..eeed78a
--- /dev/null
+++ b/Project0/src/fraction_summing/makefile
@@ -0,0 +1,25 @@
+# by default select gcc
+CXX=g++
+CXXFLAGS=-O3
+
+
+SOURCES = fraction_toolbox.cpp
+HEADERS = fraction_toolbox.hpp
+OBJ     = fraction_toolbox.o
+
+.SUFFIXES: .cpp
+
+all: main
+
+fraction_toolbox.o: fraction_toolbox.cpp fraction_toolbox.hpp
+	$(CXX) $(CXXFLAGS) -c fraction_toolbox.cpp -o fraction_toolbox.o
+
+main: $(OBJ) main.cpp $(HEADERS)
+	$(CXX) $(CXXFLAGS) *.o main.cpp -o main
+
+clean:
+	rm -f main
+	rm -f *.o
+	rm -f *.i
+	rm -f *.lst
+	rm -f output.*
\ No newline at end of file
diff --git a/Project0/src/read_environment.cpp b/Project0/src/read_environment.cpp
new file mode 100644
index 0000000..e7456d8
--- /dev/null
+++ b/Project0/src/read_environment.cpp
@@ -0,0 +1,23 @@
+// THIS PROGRAM REQUIRES NO MODIFICATION
+
+#include <iostream>
+#include <cstdlib>
+
+int main(int argc, char *argv[])
+{
+    const char *uname = std::getenv("USER");
+    const char *gcc = std::getenv("GCC_ROOT");
+    const char *nodes = std::getenv("SLURM_JOB_NODELIST");
+
+    if (uname && gcc && nodes && argc == 2)
+    {
+        std::cout << "Your name is:           " << argv[1] << '\n';
+        std::cout << "Your username is:       " << uname << '\n';
+        std::cout << "Your gcc root is:       " << gcc << '\n';
+        std::cout << "You're connected to:    " << nodes << '\n';
+    }
+    else
+    {
+        std::cout << "Something went wrong...\n";
+    }
+}