code:svg_output_rectangle[5]

svg.cpp

@@ -15,8 +15,12 @@ void svg_end() {
 void show_histogram_svg(const std::vector<size_t>& bins) {
     svg_begin(400, 300);
     svg_text(20, 20, std::to_string(bins[0]));
+    svg_rect(50, 0, bins[0] * 10, 30);
     svg_end();
 }
 void svg_text(double left, double baseline, std::string text) {
     std::cout << "<text x='" << left << "' y='"<< baseline <<"'>" << text<<"</text>";
 }
+void svg_rect(double x, double y, double width, double height){
+    std::cout << "<rect x='"<<x<<"' y='"<<y<<"' width='"<<width<<"' height='"<<height<<"' fill='#ffaaaa' />";
+}

svg.h

@@ -7,5 +7,5 @@ void svg_begin(double width, double height);
 void svg_end();
 void show_histogram_svg(const std::vector<size_t>& bins);
 void svg_text(double left, double baseline, std::string text);
-
+void svg_rect(double x, double y, double width, double height);
 #endif // SVG_H_INCLUDED