diff --git a/histogram.cpp b/histogram.cpp
new file mode 100644
index 0000000..534f64c
--- /dev/null
+++ b/histogram.cpp
@@ -0,0 +1,52 @@
+#include <iostream>
+#include <conio.h>
+#include <vector>
+#include "histogram.h"
+using namespace std;
+
+static void find_minmax(const vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers)
+    {
+        if (x < min)
+        {
+            min = x;
+        }
+        if (x > max)
+        {
+            max = x;
+        }
+    }
+}
+
+vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count)
+{
+    double min_number, max_number;
+    find_minmax(numbers, min_number, max_number);
+    vector<size_t> bins(bin_count);
+    for (int i = 0; i < bin_count; i++)
+    {
+        bins[i] = 0;
+    }
+    double bin_size = (max_number - min_number) / bin_count;
+    for (size_t i = 0; i < numbers.size(); i++)
+    {
+        bool found = false;
+        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
+        {
+            auto lo = min_number + j * bin_size;
+            auto hi = min_number + (j + 1) * bin_size;
+            if ((lo <= numbers[i]) && (numbers[i] < hi))
+            {
+                bins[j]++;
+                found = true;
+            }
+        }
+        if (!found)
+        {
+            bins[bin_count - 1]++;
+        }
+    }
+    return bins;
+}
\ No newline at end of file
diff --git a/histogram.h b/histogram.h
new file mode 100644
index 0000000..1991ac2
--- /dev/null
+++ b/histogram.h
@@ -0,0 +1,4 @@
+#pragma once
+#include <vector>
+
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count);
\ No newline at end of file
diff --git a/lab03.vcxproj b/lab03.vcxproj
index 3678d76..097c62d 100644
--- a/lab03.vcxproj
+++ b/lab03.vcxproj
@@ -19,7 +19,15 @@
     </ProjectConfiguration>
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="histogram.cpp" />
     <ClCompile Include="lab1.cpp" />
+    <ClCompile Include="text.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="histogram.h">
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</ExcludedFromBuild>
+    </ClInclude>
+    <ClInclude Include="text.h" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <VCProjectVersion>17.0</VCProjectVersion>
diff --git a/lab1.cpp b/lab1.cpp
index 0694a6d..8db375e 100644
--- a/lab1.cpp
+++ b/lab1.cpp
@@ -1,6 +1,8 @@
 #include <iostream>
 #include <conio.h>
 #include <vector>
+#include "histogram.h"
+#include "text.h"
 using namespace std;
 struct Input {
     vector<double> numbers;
@@ -19,100 +21,6 @@ Input input_data() {
     return in;
 }
 
-void find_minmax(const vector<double>& numbers, double& min, double& max) {
-    min = numbers[0];
-    max = numbers[0];
-    for (double x : numbers) 
-    {
-        if (x < min)
-        {
-            min = x;
-        }
-        if (x > max)
-        {
-            max = x;
-        }
-    }
-}
-
-vector<size_t> make_histogram(vector<double>& numbers, size_t bin_count)
-{
-    double min_number, max_number;
-    find_minmax(numbers, min_number, max_number);
-    vector<size_t> bins(bin_count);
-    for (int i = 0; i < bin_count; i++)
-    {
-        bins[i] = 0;
-    }
-    double bin_size = (max_number - min_number) / bin_count;
-    for (size_t i = 0; i < numbers.size(); i++)
-    {
-        bool found = false;
-        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
-        {
-            auto lo = min_number + j * bin_size;
-            auto hi = min_number + (j + 1) * bin_size;
-            if ((lo <= numbers[i]) && (numbers[i] < hi))
-            {
-                bins[j]++;
-                found = true;
-            }
-        }
-        if (!found)
-        {
-            bins[bin_count - 1]++;
-        }
-    }
-    return bins;
-}
-
-void find_max_capacity(vector<size_t>& bins, size_t& max_bin_capacity)
-{
-    max_bin_capacity = bins[0];
-    for (size_t x : bins)
-    {
-        if (x > max_bin_capacity)
-        {
-            max_bin_capacity = x;
-        }
-    }
-}
-
-void show_histogram_text(vector<size_t>& bins, size_t max_asterisk)
-{
-    size_t max_bin_capacity{};
-    find_max_capacity(bins, max_bin_capacity);
-    size_t height = 0;
-    for (int i = 0; i < bins.size(); i++)
-    {
-        if (bins[i] < 10)
-        {
-            cout << "  " << bins[i] << "|";
-        }
-        if ((bins[i] < 100) && (bins[i] > 9))
-        {
-            cout << " " << bins[i] << "|";
-        }
-        if (bins[i] >= 100)
-        {
-            cout << bins[i] << "|";
-        }
-        if (max_bin_capacity > max_asterisk)
-        {
-            height = max_asterisk * (static_cast<double>(bins[i]) / max_bin_capacity);
-        }
-        else
-        {
-            height = bins[i];
-        }
-        for (int j = 0; j < height; j++)
-        {
-            cout << "*";
-        }
-        cout << "\n";
-    }
-}
-
 int main()
 {
     const size_t SCREEN_WIDTH = 80;
diff --git a/text.cpp b/text.cpp
new file mode 100644
index 0000000..b14d021
--- /dev/null
+++ b/text.cpp
@@ -0,0 +1,52 @@
+#include <iostream>
+#include <conio.h>
+#include <vector>
+#include "text.h"
+using namespace std;
+
+static void find_max_capacity(const vector<size_t>& bins, size_t& max_bin_capacity)
+{
+    max_bin_capacity = bins[0];
+    for (size_t x : bins)
+    {
+        if (x > max_bin_capacity)
+        {
+            max_bin_capacity = x;
+        }
+    }
+}
+
+void show_histogram_text(const vector<size_t>& bins, size_t max_asterisk)
+{
+    size_t max_bin_capacity{};
+    find_max_capacity(bins, max_bin_capacity);
+    size_t height = 0;
+    for (int i = 0; i < bins.size(); i++)
+    {
+        if (bins[i] < 10)
+        {
+            cout << "  " << bins[i] << "|";
+        }
+        if ((bins[i] < 100) && (bins[i] > 9))
+        {
+            cout << " " << bins[i] << "|";
+        }
+        if (bins[i] >= 100)
+        {
+            cout << bins[i] << "|";
+        }
+        if (max_bin_capacity > max_asterisk)
+        {
+            height = max_asterisk * (static_cast<double>(bins[i]) / max_bin_capacity);
+        }
+        else
+        {
+            height = bins[i];
+        }
+        for (int j = 0; j < height; j++)
+        {
+            cout << "*";
+        }
+        cout << "\n";
+    }
+}
\ No newline at end of file
diff --git a/text.h b/text.h
new file mode 100644
index 0000000..e5ab877
--- /dev/null
+++ b/text.h
@@ -0,0 +1,4 @@
+#pragma once
+#include <vector>
+
+void show_histogram_text(const std::vector<size_t>& bins, std::size_t max_asterisk);
\ No newline at end of file