iven the base class Instrument, define a derived class StringInstrument for string instruments. class Instrument: def init(self, name, manufacturer, year_built, cost): self.name = name self.manufacturer = manufacturer self.year_built = year_built self.cost = cost def print_info(self): print('Instrument Information:') print(' Name:', self.name) print(' Manufacturer:', self.manufacturer) print(' Year built:', self.year_built) print(' Cost:', self.cost) class StringInstrument(Instrument): # TODO: Define constructor with attributes: # name, manufacturer, year_built, cost, num_strings, num_frets if name == "main": instrument_name = input() manufacturer_name = input() year_built = int(input()) cost = int(input()) string_instrument_name = input() string_manufacturer = input() string_year_built = int(input()) string_cost = int(input()) num_strings = int(input()) num_frets = int(input()) my_instrument = Instrument(instrument_name, manufacturer_name, year_built, cost) my_string_instrument = StringInstrument(string_instrument_name, string_manufacturer, string_year_built, string_cost, num_strings, num_frets) my_instrument.print_info() my_string_instrument.print_info() print(' Number of strings:', my_string_instrument.num_strings) print(' Number of frets:', my_string_instrument.num_frets)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Given the base class Instrument, define a derived class StringInstrument for string instruments.

class Instrument:
def __init__(self, name, manufacturer, year_built, cost):
self.name = name
self.manufacturer = manufacturer
self.year_built = year_built
self.cost = cost

def print_info(self):
print('Instrument Information:')
print(' Name:', self.name)
print(' Manufacturer:', self.manufacturer)
print(' Year built:', self.year_built)
print(' Cost:', self.cost)

class StringInstrument(Instrument):
# TODO: Define constructor with attributes:
# name, manufacturer, year_built, cost, num_strings, num_frets

if __name__ == "__main__":
instrument_name = input()
manufacturer_name = input()
year_built = int(input())
cost = int(input())
string_instrument_name = input()
string_manufacturer = input()
string_year_built = int(input())
string_cost = int(input())
num_strings = int(input())
num_frets = int(input())

my_instrument = Instrument(instrument_name, manufacturer_name, year_built, cost)
my_string_instrument = StringInstrument(string_instrument_name, string_manufacturer, string_year_built, string_cost, num_strings, num_frets)

my_instrument.print_info()
my_string_instrument.print_info()

print(' Number of strings:', my_string_instrument.num_strings)
print(' Number of frets:', my_string_instrument.num_frets)

**Example Input and Output:**

**Input:**
```
Drums
Zildjian
2015
2500
Guitar
Gibson
2002
1200
6
19
```

**Output:**
```
Instrument Information:
Name: Drums
Manufacturer: Zildjian
Year built: 2015
Cost: 2500

Instrument Information:
Name: Guitar
Manufacturer: Gibson
Year built: 2002
Cost: 1200
Number of strings: 6
Number of frets: 19
```

This example demonstrates how specific data inputs about musical instruments can be formatted into a structured output, providing detailed information on each instrument such as its name, manufacturer, year of manufacture, cost, and additional properties specific to the type of instrument (e.g., number of strings and frets for a guitar).

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