code: fix and prompt

main.cpp

@@ -12,29 +12,29 @@ struct Input {
 };
 
 Input
-input_data() {
+input_data(istream& in, bool prompt) {
     int i;
     size_t number_count;
     string check1 = " ";
     string check2 = "#";
  
-    cerr << "Enter number count: ";
-    cin >> number_count;
+    if (prompt) { cerr << "Enter number count: "; };
+    in >> number_count;
 
     Input in1;
     in1.numbers.resize(number_count);
-    cerr << "Enter numbers: ";
+    if (prompt) { cerr << "Enter numbers: "; };
     for (size_t i = 0; i < number_count; i++) {
-        cin >> in1.numbers[i];
+        in >> in1.numbers[i];
     }
 
-    cerr << "Enter bin count: ";
-    cin >> in1.bin_count;
+    if (prompt) { cerr << "Enter bin count: "; };
+    in >> in1.bin_count;
 
  
-    cerr << "Enter stroke colour without spaces or in code format:";
-    cin.ignore();
-    getline(cin, in1.stroke);
+    if (prompt) { cerr << "Enter stroke colour without spaces or in code format:"; };
+    in.ignore();
+    getline(in, in1.stroke);
 
     for (i = 0; i < in1.stroke.length(); i++) {
         if (isspace(in1.stroke[i])) {
@@ -55,7 +55,7 @@ int main()
 {
     const size_t SCREEN_WIDTH = 80;
     const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
-    auto in1 = input_data();
+    auto in1 = input_data(cin,true);
     auto bins = make_histogram(in1.numbers, in1.bin_count);
     show_histogram_svg(bins, in1.stroke);
     return 0;