code: обработка ошибок

lab01.cbp

@@ -32,7 +32,23 @@
 			<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>

main.cpp

@@ -1,5 +1,9 @@
 #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;
@@ -10,95 +14,55 @@ struct Input {
 };
 
 Input
-input_data() {
+input_data(istream& in, bool prompt) {
     size_t number_count;
-    cin >> number_count;
-    Input in;
-    in.numbers.resize(number_count);
-    for (size_t i = 0; i < number_count; i++) {
-        cin >> in.numbers[i];
-    }
-    cin >> in.bin_count;
-    return in;
-}
-
-void
-find_minmax(const vector<double>& numbers, double& min, double& max) {
-    min = numbers[0];
-    max = numbers[0];
-    for (size_t x : numbers) {
-        if (x < min) {
-            min = x;
-        }
-        else if (x > max) {
-            max = x;
-        }
-    }
-    // (çäåñü êîä ïîèñêà ìèíèìóìà è ìàêñèìóìà)
-}
-
-vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count){
-    vector<size_t> bins(bin_count);
-    double min, max;
-    find_minmax(numbers, min, max);
-    double bin_size = (max-min)/bin_count;
-    for (size_t i = 0; i < numbers.size(); 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]++;
-        }
-    }
-    return bins;
-}
-
-void
-show_histogram_text(vector<size_t> bins){
-    size_t max_count = bins[0];
-    for(size_t x: bins){
-        if(x > max_count){
-            max_count = x;
-        }
-    }
-    vector<size_t> heights(bins.size());
-    if (max_count>MAX_ASTERISK){
-        for (size_t i = 0; i < bins.size(); 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<bins.size(); 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];
         }
-    }
-    for(size_t i=0; i<bins.size(); i++){
-        if (bins[i] < 10){
-            cout << "  " << bins[i] << "|";
-        }
-        else if (bins[i] < 100){
-            cout << " " << bins[i] << "|";
-        }
-        else{
-            cout << bins[i] << "|";
-        }
-        for (size_t j=0; j<heights[i]; j++){
-            cout<<"*";
-        }
-        cout<<"\n";
+        cerr << "input bin count";
+        in >> inn.bin_count;
+        return inn;
     }
 }
 
 int
-main(){
-    auto in = input_data();
+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);
+        }
+        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_text(bins);
+    show_histogram_svg(bins);
     return 0;
 }