In C$++$ ; Need Help with this weeks lab. I need to Implement a "bare bones" version of the BigNumber class with just the following:

string constructor

stream insertion operator

stream extraction operator

$//$ cin $>>$ b;$//$ same as operator$>>($cin$,$ b$)$;

$$ istream & operator$>>($istream & in$,$ BigNumber & b$)\{$

$//$ read the user input $($really just a string$)$

$//$ set b to the BigNumber object corresponding to user input

$//($Use the string constructor$)$

$$ return in;

$\}$

$<$ and$==$ operators$($operator$<$ and operator$==)$

increment and decrement operators$($example with decrement$4500-->4499$

$($for completeness provide both pre and post version$)$

$($Special case:$100-->099$ so update numDigits$)$

operator$+$ that uses repeated increment and decrement.$$

That means$$ b $+$ c $-->(++$b $+--$c$)$ Repeat in a loop until c is equal$$ BigNumber$(0)$

Example$12+3-->13+2-->14+1-->15+0-->$ return $15$

Upload$$ BigNumber.h$,$ BigNumber.cpp and a simple driver to test the above member functions.

$$

Driver will just look something like this...

#include

#include "BigNumber.h$"$

int main$()$

$\{$

$$ BigNumber b$("567")$;

$$ std::cout $<<$ b $<<$ std::endl;

$$ b$++$;

$$ std::cout $<<$ b $<<$ std::endl;

$//$ more tests

$$ return $0$;

$\}$