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8.7 LAB: Instrument information (derived classes) Given main() and the Instrument class, define a derived class, StringInstrument, for string instruments.

Ex. If the input is:

Drums
Zildjian
2015
2500
Guitar
Gibson
2002
1200
6
19
the output is:

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

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