diff --git a/.gitignore b/.gitignore
index fe5ed81..388d165 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,5 @@
 /unittest.layout
 /start.sh
 /cs-lab34
+/start
+/main.o
diff --git a/main.cpp b/main.cpp
index e170d64..95c00d7 100755
--- a/main.cpp
+++ b/main.cpp
@@ -3,13 +3,14 @@
 
 #include <iostream>
 #include <vector>
+#include <curl/curl.h>
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
 
 using namespace std;
 
-struct Input {
+struct Input {                                                      //data input
     vector<double> numbers;
     size_t bin_count{};
     size_t interval_task{};
@@ -17,35 +18,45 @@ struct Input {
 
 
 Input
-input_data() {
+input_data(istream& in, bool prompt) {                                                      //input data structure
+
+    if (prompt == false) {                                           //prompt output
+        cerr.rdbuf(NULL);
+    }
+
     size_t number_count;
-    cin >> number_count;
+    cerr << "Enter number count: \n";
+    cerr.flush();
+    in >> number_count;
 
-    Input in;
+    Input in_data_struct;
 
-    in.numbers.resize(number_count);
+    in_data_struct.numbers.resize(number_count);
     for (size_t i = 0; i < number_count; i++) {
-        cin >> in.numbers[i];
+        cerr << "Enter number "<< i << " : \n";
+        in >> in_data_struct.numbers[i];
     }
 
-    cin >> in.bin_count;
+    cerr << "Enter bin count: \n";
+    in >> in_data_struct.bin_count;
 
-    cin >> in.interval_task;
+    cerr << "Enter interval from task: \n";
+    in >> in_data_struct.interval_task;
 
-    if ((in.interval_task >= 2.0) && (in.interval_task <= 9.0)) {
-        return in;
+    if ((in_data_struct.interval_task >= 2.0) && (in_data_struct.interval_task <= 9.0)) {       //scale interval size check
+        return in_data_struct;
     } else {
-        std::cout << "ERROR";
+        std::cout << "ERROR";                                           //error situation and program exit
         exit(1);
     }
-
 }
 
 
 int main() {
-    auto in = input_data();
-    auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_svg(bins, in.interval_task);
+    //curl_global_init(CURL_GLOBAL_ALL);
+    auto in = input_data(cin, true);                                             //input data
+    auto bins = make_histogram(in.numbers, in.bin_count);               //calculating bin size for the histogram
+    show_histogram_svg(bins, in.interval_task);                         //histogram output in the format svg code
 
     return 0;
 }