code: обработка ошибок

lab01.cbp

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="lab01" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/lab01" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+			<Target title="Release">
+				<Option output="bin/Release/lab01" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Release/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-O2" />
+				</Compiler>
+				<Linker>
+					<Add option="-s" />
+				</Linker>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+			<Add option="-fexceptions" />
+		</Compiler>
+		<Unit filename=".gitignore" />
+		<Unit filename="histogram.cpp" />
+		<Unit filename="histogram.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
+		<Unit filename="histogram_internal.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
+		<Unit filename="main.cpp" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
+		<Unit filename="text.cpp" />
+		<Unit filename="text.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
+		<Extensions>
+			<lib_finder disable_auto="1" />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>

main.cpp

@@ -1,92 +1,68 @@
 #include <iostream>
 #include <vector>
+#include <curl/curl.h>
+#include "histogram.h"
+#include "text.h"
+#include "svg.h"
 using namespace std;
 const size_t SCREEN_WIDTH = 80;
 const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
-int main()
-{
+
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+};
+
+Input
+input_data(istream& in, bool prompt) {
     size_t number_count;
-    cerr << "Enter number count: ";
-    cin >> number_count;
-
-    vector<double> numbers(number_count);
-    cerr << "Enter numbers: ";
-    for(size_t i = 0; i < number_count; i++){
-        cin >> numbers[i];
-    }
-
-    size_t bin_count;
-    cerr << "Enter bin count: ";
-    cin >> bin_count;
-
-    double min = numbers[0];
-    double max = numbers[0];
-    /*
-    for (size_t x : numbers) {
-        if (x < min) {
-            min = x;
-        }
-        else if (x > max) {
-            max = x;
-        }
-    }
-    */
-    for (size_t i=1; i<number_count; i++){
-            if (numbers[i]<min){
-                min=numbers[i];
-            }
-            else if (numbers[i]>max){
-                max=numbers[i];
-            }
-    }
-    vector<size_t> bins(bin_count);
-    double bin_size = (max-min)/bin_count;
-    for (size_t i = 0; i < number_count; i++) {
-        bool found = false;
-        for (size_t j = 0; (j < bin_count - 1) && !found; j++) {
-            auto lo = min + j * bin_size;
-            auto hi = min + (j + 1) * bin_size;
-            if ( (numbers[i] >= lo) && (numbers[i] < hi) ) {
-                bins[j]++;
-                found = true;
-            }
-        }
-        if (!found) {
-            bins[bin_count-1]++;
-        }
-
-    }
-    size_t max_count = bins[0];
-    for(size_t x: bins){
-        if(x > max_count){
-            max_count = x;
-        }
-    }
-    vector<size_t> heights(bin_count);
-    if (max_count>MAX_ASTERISK){
-        for (size_t i = 0; i < bin_count; i++){
-            heights[i] = MAX_ASTERISK * (static_cast<double>(bins[i]) /max_count);
+    if (prompt == true){
+        cerr << "input number count";
+        in >> number_count;
+        Input inn;
+        inn.numbers.resize(number_count);
+        cerr << "input numbers";
+        for (size_t i = 0; i < number_count; i++) {
+            cin >> inn.numbers[i];
         }
+        cerr << "input bin count";
+        in >> inn.bin_count;
+        return inn;
     }
     else{
-        for (size_t i=0; i<bin_count; i++){
-            heights[i] = bins[i];
+        cout << "input number count";
+        in >> number_count;
+        Input inn;
+        inn.numbers.resize(number_count);
+        cout << "input numbers";
+        for (size_t i = 0; i < number_count; i++) {
+            cin >> inn.numbers[i];
         }
+        cerr << "input bin count";
+        in >> inn.bin_count;
+        return inn;
     }
-    for(size_t i=0; i<bin_count; i++){
-        if (bins[i] < 10){
-            cout << "  " << bins[i] << "|";
+}
+
+int
+main(int argc, char* argv[]){
+    CURL *curl = curl_easy_init();
+    if (argc>1){
+        if(curl) {
+            CURLcode res;
+            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
+            res = curl_easy_perform(curl);
+            if (res!=CURLE_OK){
+                cerr<<curl_easy_strerror(res);
+                exit(1);
+            }
+            curl_easy_cleanup(curl);
         }
-        else if (bins[i] < 100){
-            cout << " " << bins[i] << "|";
-        }
-        else{
-            cout << bins[i] << "|";
-        }
-        for (size_t j=0; j<heights[i]; j++){
-            cout<<"*";
-        }
-        cout<<"\n";
+        return 0;
     }
+    curl_global_init(CURL_GLOBAL_ALL);
+    auto in = input_data(cin,true);
+    auto bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_svg(bins);
     return 0;
 }