Question

12. Create a class called bMoney. It should store money amounts as long doubles. Use the function mstold() to convert a money string entered as input into a long double, and the function ldtoms() to convert the long double to a money string for display. (See Exercises 6 and 10.) You can call the input and output member functions getmoney() and putmoney(). Write another member function that adds two bMoney amounts; you can call it madd(). Adding bMoney objects is easy: Just add the long double member data amounts in two bMoney objects. Write a main() program that repeatedly asks the user to enter two money strings, and then displays the sum as a money string. Here’s how the class specifier might look:

    class bMoney
        {

        private:
            long double money;

        public:
            bMoney();

            bMoney(char s[]);
            void madd(bMoney m1, bMoney m2);
            void getmoney();
            void putmoney();

};

Answer 1

Program:

#include<iostream>
using namespace std;

//class bMoney
class bMoney
{
private:
long double money;
public:
bMoney(){money=0;}
bMoney(char s[]){
money = mstold(s);
}
void madd(bMoney m1, bMoney m2){
money = m1.money + m2.money;
}
void getmoney(){
char ms[10];
cin >> ms;
money = mstold(ms);
}
void putmoney(){
cout<<ldtoms(money)<<endl;
}
};

//main function
int main()
{
bMoney m1, m2;
cout<<"Enter money string :";
m1.getmoney();
cout<<"Enter money string :";
m2.getmoney();

bMoney m3;
m3.madd(m1, m2);

m1.putmoney();
m2.putmoney();
cout<<"After addition: ";
m3.putmoney();

return 0;
}

Output:

Enter money string :31.35
Enter money string :41.75
31.35
41.75
After addition: 73.10

N.B. Don't forget to include the definition of mstold() and ldtoms() functions to this program, otherwise you will get error message.

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