Define a class "Deposit" with following member
private : principle, time_period, rate of interest, amount
public : input(), display()
Default Constructor - to initialize all members by zero
Parametrized Constructor - to initialize with parameter
Copy Constructor - to copy and destructor
WAP to calculate amount
Objective
Write a C++ program for a Bank Deposit class using multiple constructors to initialize the data.
Algorithm / Approach
- Create a
class Depositwith private variables (p, t, r, a). - Define
input()anddisplay()methods. - Create a Default constructor (initializes to 0).
- Create a Parameterized constructor (initializes to passed values).
- Create a Copy constructor (copies values from a passed Deposit object).
- In
main(), instantiate objects using all constructors and calculate the final amount.
main.cpp
#include<iostream>
using namespace std;
class Deposit{
int p,t,r,a;
public :
void input() {
cout<<"Enter principle amount";
cin>>p;
cout<<"Enter time ";
cin>>t;
cout<<"Enter Rate of Interest ";
cin>>r;
}
void display() {
a= p+((p*r*t)/100);
cout<<"Total Amount "<< a<< endl;
}
Deposit() {
cout<<"Default Const. called\n";
p =0;
t= 0;
r = 0;
}
Deposit(int pr, int ti, int ra) {
cout<<"param Const. called \n"<<;
p = pr;
t= ti;
r = ra;
}
Deposit(Deposit &d){
cout<<"Copy Const. called\n";
p = d.p;
t = d.t;
r = d.r;
}
~Deposit() {
cout<<"Destructor called\n";
}
};
int main() {
Deposit d;
d.input();
d.display();
Deposit d2(1000,20,3);
d2.display();
cout<<"Default Const. copied\n"<<;
Deposit d3(d);
d3.display();
cout<<"Param. Const. copied\n";
Deposit d4(d2);
d4.display();
return 0;
}Expected Output
Default Const. called Enter principle amount 5000 Enter time 2 Enter Rate of Interest 5 Total Amount 5500 param Const. called Total Amount 1600 Default Const. copied Copy Const. called Total Amount 5500 Param Const. copied Copy Const. called Total Amount 1600 Destructor called Destructor called Destructor called Destructor called
Explanation of the Program
- This program uses "Constructor Overloading". Just like function overloading, you can have multiple constructors for the same class as long as they require different parameters.
- Note on the provided code: There are severe syntax errors on lines 92 and 113.
cout<<"..."<<;ends with an empty insertion operator before the semicolon. This will cause a compilation error. The trailing<<must be removed.
Complexity
Time Complexity
O(1)
Space Complexity
O(1)
Common Mistakes
- Syntax Error: Ending a
coutstatement with a dangling insertion operator (e.g.,cout << "Text" <<;).
