32dynamic_constr.cpp

#include <iostream>
using namespace std;

class BankDeposit
{
    int principal;
    int year;
    float interestRate;
    float returnValue;

public:
//Reason of creating an empty constructor :
//if an object is passed without any initialized values to show or display, it will run the program by initializing that object
//without it, the empty object will throw error since compiler won't be able to find from where to catch the values from
    BankDeposit() {}
    BankDeposit(int p, int y, float r);
    BankDeposit(int p, int y, int r);
    void show();
};

BankDeposit ::BankDeposit(int p, int y, float r)
{
    principal = p;
    year = y;
    interestRate = r;
    returnValue = principal;
    for (int i = 0; i < y; i++)
    {
        returnValue *= (1 + interestRate);
    }
}
BankDeposit ::BankDeposit(int p, int y, int r)
{
    principal = p;
    year = y;
    interestRate = float(r) / 100;
    returnValue = principal;
    for (int i = 0; i < y; i++)
    {
        returnValue *= (1 + interestRate);
    }
}
void BankDeposit ::show()
{
    cout << "The principal amount deposited in year 0 : " << principal << endl
         << " timeline for deposition : " << year << endl
         << "computes the return value to : " << returnValue << endl;
}
int main()
{
    BankDeposit user[5];
    int p, y, r_d;
    float r_p;
    bool per = true;
    cout << "Enter your Principal amount, year and rate (in percentage or decimal value) user :" << endl;
    cout << "??Decimal : 0 ??Percentage : 1" << endl;
    cin >> per;
    if (per = 1)
    {
        for (int i = 0; i < 3; i++)
        {
            cout << "Principal : ";
            cin >> p;
            cout << "Year : ";
            cin >> y;
            cout << "Interest Rate : ";
            cin >> r_p;
            user[i] = BankDeposit(p, y, r_p);
        }

        for (int i = 0; i < 3; i++)
        {
            user[i].show();
            cout << endl;
        }
    }
    else
    {
        for (int i = 0; i < 3; i++)
        {
            cout << "Principal : ";
            cin >> p;
            cout << "Year : ";
            cin >> y;
            cout << "Interest Rate : ";
            cin >> r_d;
            user[i] = BankDeposit(p, y, r_d);
        }

        for (int i = 0; i < 3; i++)
        {
            user[i].show();
            cout << endl;
        }
    }
    return 0;
}