Code: Обработка ошибок

main.cpp

@@ -2,6 +2,7 @@
 #include <math.h>
 #include <iostream>
 #include <conio.h>
+#include <curl/curl.h>
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
@@ -11,19 +12,44 @@ struct Input {
     size_t bin_count{};
 };
 Input
-input_data(){
+input_data(istream& in, bool prompt){
+    cerr << "Do you need hints? Type 0 for no, 1 for yes: ";
+    int ans;
+    int state = 0;
+    while (state ==0){
+        in >> ans;
+        if (ans==1) {prompt = true; state=1;}
+        else if (ans==0) {prompt = false; state=1;}
+        else cerr << "Invalid data. Please type only 0 or 1: ";
+    }
     size_t number_count;
-	cin >> number_count;
-	Input in;
-	in.numbers.resize(number_count);
+    if (prompt == true) cerr << "Enter number count: ";
+	in >> number_count;
+	Input input;
+	input.numbers.resize(number_count);
+	if (prompt == true) cerr << "Enter numbers: ";
 	for (size_t i = 0; i < number_count; i++){
-		cin >> in.numbers[i];
+		in >> input.numbers[i];
 	}
-	cin >> in.bin_count;
-	return in;
+	if (prompt == true) cerr << "Enter bin count: ";
+	in >> input.bin_count;
+	return input;
 }
-int main(){
-	auto in = input_data();
+int main(int argc, char* argv[]){
+    if (argc >1 ){
+        CURL* curl = curl_easy_init();
+        if(curl){
+            CURLcode res;
+            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
+            res = curl_easy_perform(curl);
+            if(res != CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
+        }
+        curl_easy_cleanup(curl);
+        return 0;
+        curl_global_init(CURL_GLOBAL_ALL);
+    }
+    bool prompt;
+	auto in = input_data(cin, prompt);
 	auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
 }