общий вариант

svg.cpp

@@ -38,7 +38,7 @@ svg_rect(double x, double y, double width, double height, string stroke, string
 void
 show_histogram_svg(const vector<size_t>& B, size_t& number_count)
 {
-    auto IMAGE_WIDTH=0;
+/*    auto IMAGE_WIDTH=0;
     const auto BLOCK_WIDTH = 10;
     cerr << "Enter IMAGE_WIDTH:";
     cin >> IMAGE_WIDTH;
@@ -49,7 +49,8 @@ show_histogram_svg(const vector<size_t>& B, size_t& number_count)
         cerr << "Enter IMAGE_WIDTH:";
         cin >> IMAGE_WIDTH;
     }
-
+*/
+    auto IMAGE_WIDTH=200;
     const auto IMAGE_HEIGHT = 300;
     const auto TEXT_LEFT = 20;
     const auto TEXT_BASELINE = 20;