code: добавлен вывод шкалы в формате svg

.gitignore

@@ -2,4 +2,11 @@
 /obj
 /cs-lab34.layout
 /cs-lab34.depend
+/a.out
+/start_01.sh
+/test
+/unittest.depend
+/NUL
 /unittest.layout
+/start.sh
+/cs-lab34

cs-lab34.cbp

@@ -32,7 +32,14 @@
 			<Add option="-Wall" />
 			<Add option="-fexceptions" />
 		</Compiler>
+		<Unit filename=".gitignore" />
+		<Unit filename="histogram.cpp" />
+		<Unit filename="histogram.h" />
 		<Unit filename="main.cpp" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h" />
+		<Unit filename="text.cpp" />
+		<Unit filename="text.h" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
 		</Extensions>

histogram.cpp

@@ -1,17 +1,25 @@
 #include "histogram.h"
+#include "histogram_internal.h"
 
 void
 find_minmax (const std::vector<double>& numbers, double& min, double& max) {
+    if (numbers.size() == 0) {                                                    //empty array situation check
+        return;
+    } else {
         min = numbers[0];
-    for(double element : numbers)
+        for (double element : numbers) {
-    {
+            if (element < min) {
-        if(element < min) {min = element;}
+                min = element;
+            }
         }
 
         max = numbers[0];
-    for(double element : numbers)
+        for (double element : numbers) {
-    {
+            if (element > max) {
-        if(element > max) {max = element;}
+                max = element;
+            }
+        }
+        return;
     }
 }
 
@@ -28,19 +36,18 @@ make_histogram(const std::vector<double>& numbers, std::size_t bin_count){
     std::vector <std::size_t> bins(bin_count);
 
 
-    for(std::size_t i = 0; i < numbers.size(); ++i)                                //Checking if a number is in a bin.
+    for (std::size_t i = 0; i < numbers.size(); ++i) {                                //Checking if a number is in a bin.
-    {
         bool found = false;
-        for(std::size_t j = 0; (j < bin_count - 1) && !found; ++j)
+        for (std::size_t j = 0; (j < bin_count - 1) && !found; ++j) {
-        {
             if ( (numbers[i] >= (min + j * bin_size)) &&                     //Where (min + j * bin_size) is equal to the lower border
-            (numbers[i] < (min + (j + 1) * bin_size)) )                     //and (min + (j + 1) * bin_size) is equal to the higher border.
+            (numbers[i] < (min + (j + 1) * bin_size)) ) {                     //and (min + (j + 1) * bin_size) is equal to the higher border.
-            {
                 ++bins[j];
                 found = true;
             }
         }
-        if(!found) {++bins[bin_count - 1];}                                 //A special case when current number is equal to the maximum.
+        if (!found) {
+            ++bins[bin_count - 1];                                 //A special case when current number is equal to the maximum.
+        }
     }
     return bins;
 }

main.cpp

@@ -5,13 +5,14 @@
 #include <vector>
 #include "histogram.h"
 #include "text.h"
+#include "svg.h"
 
 using namespace std;
 
 struct Input {
     vector<double> numbers;
     size_t bin_count{};
-    //size_t interval_task{};
+    size_t interval_task{};
 };
 
 
@@ -29,15 +30,22 @@ input_data() {
 
     cin >> in.bin_count;
 
-    //cin >> in.interval_task;
+    cin >> in.interval_task;
+
+    if ((in.interval_task >= 2.0) && (in.interval_task <= 9.0)) {
         return in;
+    } else {
+        std::cout << "ERROR";
+        exit(1);
+    }
+
 }
 
 
 int main() {
     auto in = input_data();
     auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_text(bins);
+    show_histogram_svg(bins, in.interval_task);
 
     return 0;
 }

marks.svg

@@ -0,0 +1,3 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<svg width='410' height='300' viewBox='0 0 410 300' xmlns='http://www.w3.org/2000/svg'>
+<text x='20' y='20'>9</text><rect x='50' y='0' width='31.5' height='30' stroke='#483D8B' fill='#9370DB' /><text x='20' y='50'>33</text><rect x='50' y='30' width='115.5' height='30' stroke='#483D8B' fill='#9370DB' /><text x='20' y='80'>100</text><rect x='50' y='60' width='350' height='30' stroke='#483D8B' fill='#9370DB' /><rect x='50' y='100' width='60' height='8' stroke='chocolate' fill='tan' /><rect x='122.5' y='100' width='60' height='8' stroke='chocolate' fill='tan' /><rect x='195' y='100' width='60' height='8' stroke='chocolate' fill='tan' /><rect x='267.5' y='100' width='60' height='8' stroke='chocolate' fill='tan' /><rect x='340' y='100' width='60' height='8' stroke='chocolate' fill='tan' /><text x='20' y='130'>0</text><text x='112.25' y='130'>6</text><text x='392' y='130'>30</text></svg>

marks.txt

@@ -0,0 +1,6 @@
+142
+1 1 1 1 1 1 1 1 1
+2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
+3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
+3
+6

svg.cpp

@@ -0,0 +1,100 @@
+#include <iostream>
+#include "svg.h"
+#include <string.h>
+#include <math.h>
+
+static void
+find_max (const std::vector<std::size_t>& numbers, std::size_t& max) {
+    max = numbers[0];
+    for (double element : numbers) {
+        if (element > max) {
+            max = element;
+        }
+    }
+}
+
+void
+svg_begin (double width, double height) {
+    std::cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
+    std::cout << "<svg ";
+    std::cout << "width='" << width << "' ";
+    std::cout << "height='" << height << "' ";
+    std::cout << "viewBox='0 0 " << width << " " << height << "' ";
+    std::cout << "xmlns='http://www.w3.org/2000/svg'>\n";
+}
+
+void
+svg_end() {
+    std::cout << "</svg>\n";
+}
+
+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::string stroke = "black", std::string fill = "black") {
+    std::cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='" << stroke << "' fill='" << fill << "' />";
+}
+
+
+
+void
+show_histogram_svg (const std::vector<size_t>& bins, std::size_t& interval_task) {
+    const auto IMAGE_WIDTH = 400;
+    //const auto IMAGE_HEIGHT = 300;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+    //const auto BLOCK_WIDTH = 50;
+    const auto MAX_WIDTH = IMAGE_WIDTH - TEXT_WIDTH;
+    //const auto SPACE_BETWEEN_INTERVALS = 10;
+    const auto INTERVAL_SCALED = interval_task * 10;
+    const auto SCALE_WIDTH = 8;
+    //const auto HALF_SPACE_BETWEEN_INTERVALS = static_cast<double>(SPACE_BETWEEN_INTERVALS) / (2);
+    const auto HALF_DEFAULT_FONT = 4;
+    const auto MINIMAL_FONT_SPACE = 4 * 4;
+
+    std::size_t max_bin;
+    find_max(bins, max_bin);
+    double modifier;
+
+    modifier = static_cast<double>(MAX_WIDTH) / (max_bin);
+
+    size_t times;
+
+    for (times = 0; (times * INTERVAL_SCALED) < (MAX_WIDTH - MINIMAL_FONT_SPACE); ++times);
+
+    double interval_space = static_cast<double>(MAX_WIDTH - INTERVAL_SCALED * (times - 1)) / (times - 2);
+    double half_interval_space = interval_space / 2;
+
+    svg_begin(410, 300);
+
+    double top = 0;
+    for (size_t bin : bins) {
+        const double bin_width = modifier * bin;
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "#483D8B", "#9370DB");
+        top += BIN_HEIGHT;
+    }
+
+    top += 10;
+
+    times -= 1;
+    for (size_t i = 0; i < times; ++i) {
+            svg_rect(TEXT_WIDTH + i * (INTERVAL_SCALED + interval_space), top, INTERVAL_SCALED, SCALE_WIDTH, "chocolate", "tan");
+        }
+
+    top += 10;
+
+    svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(0));
+    svg_text(TEXT_WIDTH + INTERVAL_SCALED + half_interval_space - HALF_DEFAULT_FONT, top + TEXT_BASELINE, std::to_string(interval_task));
+    svg_text(TEXT_WIDTH + (INTERVAL_SCALED * times) + interval_space * (times - 1) - (HALF_DEFAULT_FONT * 2), top + TEXT_BASELINE, std::to_string(interval_task * times));
+
+    svg_end();
+}
+
+
+

svg.h

@@ -0,0 +1,4 @@
+#include <vector>
+
+void
+show_histogram_svg(const std::vector<std::size_t>& bins, std::size_t& interval_task);

text.cpp

@@ -1,12 +1,16 @@
 #include <iostream>
 #include "text.h"
 
+const size_t screen_width = 80;
+const size_t max_asterisk = screen_width - 3 - 1;
+
 static void
 find_max (const std::vector<std::size_t>& numbers, std::size_t& max) {
     max = numbers[0];
-    for(double element : numbers)
+    for (double element : numbers) {
-    {
+        if (element > max) {
-        if(element > max) {max = element;}
+            max = element;
+        }
     }
 }
 
@@ -23,22 +27,29 @@ show_histogram_text(const std::vector<std::size_t>& bins){
      * In other case, histogram won't be scaled, i.e, asterisk count depends on the current bin number.
      */
 
-    if(max_bin > 76) {modifier = static_cast<double>(74) / (max_bin);}
+    if (max_bin > max_asterisk) {
-    else {modifier = 1;}
+        modifier = static_cast<double>(max_asterisk) / (max_bin);
-
+    } else {
-    for(std::size_t i = 0; i < bins.size(); ++i)                                      //Histogram output with alignment, if necessary.
+        modifier = 1;
-    {
-        if(bins[i] >= 10)
-        {
-            if(bins[i] >= 100) {std::cout << bins[i] << '|';}                    //Output a three-digit number.
-            else {std::cout << ' ' << bins[i] << '|';}                           //Output a two-digit number with alignment.
     }
-        else {std::cout << "  " << bins[i] << '|';}                              //Output a single-digit number with alignment.
+
+    for (std::size_t i = 0; i < bins.size(); ++i) {                                      //Histogram output with alignment, if necessary.
+        if (bins[i] >= 10) {
+            if (bins[i] >= 100) {
+                std::cout << bins[i] << '|';
+            }                                                                            //Output a three-digit number.
+            else {
+                std::cout << ' ' << bins[i] << '|';
+            }                                                                           //Output a two-digit number with alignment.
+        } else {
+            std::cout << "  " << bins[i] << '|';
+        }                              //Output a single-digit number with alignment.
 
 
         size_t height = modifier * bins[i];                                 //Height stands for the number of output asterisks.
-        for(size_t k = 0; k < height; ++k)
+        for (size_t k = 0; k < height; ++k) {
             std::cout << '*';
+        }
         std::cout << "\n";
     }
 }

text.h

@@ -1,8 +1,3 @@
-#ifndef HISTOGRAM_H_INCLUDED
-#define HISTOGRAM_H_INCLUDED
-
-#endif // HISTOGRAM_H_INCLUDED
-
 #include <vector>
 
 void