Implement a class named Purse that represent a coin purse: ? An object represent
ID: 3542849 • Letter: I
Question
Implement a class named Purse that represent a coin purse:
? An object represents a coin changer or coin purse that can contain any number of pennies, nickels,
dimes, and quarters.
? Constructor - Creates a purse with a given number of pennies, nickels, dimes, and quarters.
? Reporters:
? get_pennies Returns the total monetary value in the purse in pennies.
? get_nickels Returns the total monetary value in the purse in nickels.
? get_dimes Returns the total monetary value in the purse in dimes.
? get_quarters Returns the total monetary value in the purse in quarters.
? get_dollars Returns the total monetary value in the purse in dollars.
? reduce() - this function enforces a constraint that minimizes the total number of coins for a given dollar
amount. And this function is called by other functions that can change the contents of the purse: insert()
and remove() functions.
? insert(float dollars) increase the total amount in the purse. And it needs to call the reduce() to enforce
the constraint as mentioned before.
? remove(float dollars) reduces the total amount by that many dollars in the purse. And it needs to call the
reduce() to enforce the constraint as mentioned before.
Explanation / Answer
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#include <iostream>
using namespace std;
class Purse
{private:
int quarters;
int dimes;
int nickels;
int pennies;
public:
Purse(int q,int d,int n,int p)
{quarters=q;
dimes=d;
nickels=n;
pennies=p;
}
float get_pennies()
{return pennies*.01;
}
float get_nickels()
{return nickels*.05;
}
float get_dimes()
{return dimes*.1;
}
float get_quarters()
{return quarters*.25;
}
float get_dollars()
{return get_pennies()+get_nickels()+get_dimes()+get_quarters();
}
void reduce(float total)
{int t=(int)(total*100);
quarters=t/25;
t%=25;
dimes=t/10;
t%=10;
nickels=t/5;
pennies=t%5;
}
void insert( float dollars)
{float total=get_dollars()+dollars;
reduce(total);
}
void remove(float dollars)
{float total=get_dollars()-dollars;
reduce(total);
}
};
int main()
{Purse p(1,1,1,1);
cout<<p.get_dollars()<<endl;
p.insert(2);
cout<<"Total = $"<<p.get_dollars()<<endl;
cout<<p.get_quarters()<<" in quarters ";
cout<<p.get_dimes()<<" in dimes ";
cout<<p.get_nickels()<<" in nickels ";
cout<<p.get_pennies()<<" in pennies ";
p.remove(1);
cout<<"Total = $"<<p.get_dollars()<<endl;
cout<<p.get_quarters()<<" in quarters ";
cout<<p.get_dimes()<<" in dimes ";
cout<<p.get_nickels()<<" in nickels ";
cout<<p.get_pennies()<<" in pennies ";
system("pause");
return 0;
}
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