diff --git a/histogram.cpp b/histogram.cpp
new file mode 100644
index 0000000..13fd6e7
--- /dev/null
+++ b/histogram.cpp
@@ -0,0 +1,36 @@
+
+#include "histogram.h"
+const void find_minmax(const std::vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers) {
+    if (x < min) {
+        min = x;
+    }
+    else if (x > max) {
+        max = x;
+    }
+}
+}
+
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count){
+    double max,min;
+    std::vector<size_t> bins(bin_count);
+    find_minmax(numbers,min,max);
+    double bin_size = (max - min) / bin_count;
+        for(double x:numbers)
+     {
+        bool found = false;
+    for (size_t j = 0; (j < bin_count - 1) && !found; j++) {
+        auto lo = min + j * bin_size;
+        auto hi = min + (j + 1) * bin_size;
+        if ((lo <= x) && (x < hi)) {
+            bins[j]++;
+            found = true;
+        }
+    }
+    if (!found)
+        bins[bin_count-1]++;
+    }
+    return bins;
+}
diff --git a/histogram.h b/histogram.h
new file mode 100644
index 0000000..1ae09c4
--- /dev/null
+++ b/histogram.h
@@ -0,0 +1,8 @@
+#ifndef HISTOGRAM_H_INCLUDED
+#define HISTOGRAM_H_INCLUDED
+
+#include <vector>
+
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count);
+
+#endif // HISTOGRAM_H_INCLUDED
diff --git a/lab3.cbp b/lab3.cbp
index f103d77..6781c04 100644
--- a/lab3.cbp
+++ b/lab3.cbp
@@ -32,6 +32,12 @@
 			<Add option="-Wall" />
 			<Add option="-fexceptions" />
 		</Compiler>
+		<Unit filename="histogram.cpp">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
+		<Unit filename="histogram.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
 		<Unit filename="main.cpp" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
diff --git a/main.cpp b/main.cpp
index 2ee71a0..dfce5bc 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,5 +1,7 @@
 #include <iostream>
 #include <vector>
+#include "histogram.h"
+
 using namespace std;
 
 struct Input {
@@ -14,44 +16,11 @@ input_data(){
 
     Input in;
     in.numbers.resize(number_count);
-        for (size_t i = 0; i < number_count; i++) {
-            cin >> in.numbers[i];
-        }
-    cin >> in.bin_count;
-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;
+    for (size_t i = 0; i < number_count; i++) {
+        cin >> in.numbers[i];
     }
-    else if (x > max) {
-        max = x;
-    }
-}
-}
-vector<size_t> make_histogram(const vector<double>& numbers,size_t bin_count){
-    double max,min;
-    find_minmax(numbers,min,max);
-    double bin_size = (max - min) / bin_count;
-        vector<size_t> bins(bin_count);
-        for(double x:numbers)
-     {
-        bool found = false;
-    for (size_t j = 0; (j < bin_count - 1) && !found; j++) {
-        auto lo = min + j * bin_size;
-        auto hi = min + (j + 1) * bin_size;
-        if ((lo <= x) && (x < hi)) {
-            bins[j]++;
-            found = true;
-        }
-    }
-    if (!found)
-        bins[bin_count-1]++;
-    }
-    return bins;
+    cin >> in.bin_count;
+    return in;
 }
 void show_histogram(vector<size_t> bins,size_t bin_count){
     for(size_t i=0;i<bin_count;i++){
@@ -62,7 +31,7 @@ void show_histogram(vector<size_t> bins,size_t bin_count){
 }
 int main()
 {   auto in = input_data();
-    auto bins=make_histogram(in.numbers,in.bin_count);
+    auto bins = make_histogram(in.numbers,in.bin_count);
     show_histogram(bins,in.bin_count);
 
 }