code: индивидуальный вариант

main.cpp

@@ -10,6 +10,7 @@ using namespace std;
 struct Input {
     vector<double> numbers;
     size_t bin_count{};
+    size_t user_block_width;
 };
 
 Input
@@ -25,6 +26,16 @@ input_data() {
     }
     cerr << "Enter bin count: ";
     cin >> in.bin_count;
+    in.user_block_width = 15;
+    do {
+        cerr  << "Enter block width: ";
+        cin >> in.user_block_width;
+        if ((in.user_block_width < 3) || (in.user_block_width > 30)){
+            cerr << "Error: block width must be included in the interval: [3; 30]" << endl;
+        }
+    }
+    while ((in.user_block_width < 3) || (in.user_block_width > 30));
+
     return in;
 }
 
@@ -34,6 +45,6 @@ main()
 {
     auto in = input_data();
     auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_svg(bins);
+    show_histogram_svg(bins, in.user_block_width);
     return 0;
 }

svg.cpp

@@ -30,7 +30,7 @@ void svg_rect(double x, double y, double width, double height, string stroke = "
 
 
 void
-show_histogram_svg(const vector<size_t>& bins) {
+show_histogram_svg(const vector<size_t>& bins, size_t user_block_width) {
 
     const auto IMAGE_WIDTH = 400;
     const auto IMAGE_HEIGHT = 300;
@@ -38,7 +38,7 @@ show_histogram_svg(const vector<size_t>& bins) {
     const auto TEXT_BASELINE = 20;
     const auto TEXT_WIDTH = 50;
     const auto BIN_HEIGHT = 30;
-    const auto BLOCK_WIDTH = 10;
+    const auto BLOCK_WIDTH = user_block_width;
 
     const size_t MAX_WIDTH = IMAGE_WIDTH - TEXT_WIDTH - 1;
 
@@ -49,27 +49,24 @@ show_histogram_svg(const vector<size_t>& bins) {
         }
     }
 
-    if (maxbin > MAX_WIDTH) {
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
-
-    svg_begin(400, 300);
     double top = 0;
-    for (size_t bin : bins) {
+    if (maxbin<=76){
-        const double bin_width = MAX_WIDTH * (bin / maxbin);
+        for (size_t bin : bins) {
-        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+            double bin_width = BLOCK_WIDTH * bin;
-        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+            svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
-        top += BIN_HEIGHT;
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
-    }
+            top += BIN_HEIGHT;
-    svg_end();
+        }
-    }
+        svg_end();
-
+    } else {
-    svg_begin(400, 300);
+        for (size_t bin : bins) {
-    double top = 0;
+            double bin_width= MAX_WIDTH * (static_cast<double>(bin) / maxbin);
-    for (size_t bin : bins) {
+            svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
-        const double bin_width = BLOCK_WIDTH * bin;
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
-        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+            top += BIN_HEIGHT;
-        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+        }
-        top += BIN_HEIGHT;
+        svg_end();
     }
-    svg_end();
 }
 

svg.h

@@ -1,6 +1,6 @@
 #ifndef SVG_H_INCLUDED
 #define SVG_H_INCLUDED
 void
-show_histogram_svg(const std::vector<size_t>& bins);
+show_histogram_svg(const std::vector<size_t>& bins, size_t user_block_width);
 
 #endif // SVG_H_INCLUDED