добавила параметр argc

main.cpp

@@ -12,10 +12,10 @@ struct Input {
     size_t bin_count{};
 };
 
-Input
-input_data(istream& in, bool prompt) {
+Input input_data(istream& in, bool prompt) {
     if (prompt) {
-    cerr << "Enter number count, numbers and bin count: ";}
+        cerr << "Enter number count, numbers and bin count: ";
+    }
 
     size_t number_count;
     in >> number_count;
@@ -32,13 +32,19 @@ input_data(istream& in, bool prompt) {
     return input;
 }
 
-int
-main() {
+int main(int argc, char* argv[]) {
+    if (argc > 1) {
+        cout << "argc = " << argc << endl;
+        for (int i = 0; i < argc; ++i) {
+            cout << "argv[" << i << "] = " << argv[i] << endl;
+        }
+        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;
 }