Listing 15.16 uses two catch blocks after each try block so that the nbad_index exception leads to the label_val() method being invoked. Modify the program so that it uses a single catch block after each try block and uses RTTI to handle invoking label_val() only when appropriate.

Here is the output of the program in Listings 15.14, 15.15, and 15.16:
First try block:
Year = 2011
1220 1100 1122 2212 1232 2334
2884 2393 3302 2922 3002 3544
Year = 2012
Label = Blogstar
12 11 22 21 32 34
28 29 33 29 32 35
Index error in LabeledSales object
Company: Blogstar
bad index: 12
Next try block:
Index error in Sales object
bad index: 20
done

Transcribed Image Text:

Listing 15.16 use_sales.cpp // use_sales.cpp #include #include "sales.h" int main() { using std::cout; using std::cin; using std::endl; double vals1 [12] = { }; nested exceptions 1220, 1100, 1122, 2212, 1232, 2334, 2884, 2393, 3302, 2922, 3002, 3544 double vals2 [12] = { 12, 11, 22, 21, 32, 34, 28, 29, 33, 29, 32, 35 }; Sales sales1 (2011, valsi, 12); Labeledsales sales2 ("Blogstar", 2012, vals2, 12); cout << "First try block: \n"; try int i; cout << "Year = " << sales1. Year () << endl; for (i = 0; i < 12; ++1) { cout << salesl [i] << ¹; if (1 6 = 5) cout << endl; } cout << "Year = " << sales2. Year() << endl; cout << "Label = " << sales2.Label() << endl; for (i = 0; i <= 12; ++i) { cout << sales2 [1] << ¹; if (1 6 == 5) cout << endl; } cout << "End of try block 1. \n"; } catch (Labeledsales: :nbad_index & bad). { cout << bad.what (); cout << "Company: << bad.label_val() << endl; cout << "bad index: " << bad.bi_val() << endl; } catch (Sales::bad_index & bad) cout << bad. what ();