CPP program to demonstrate the use of default arguments

In this article we will look at implementing a CPP program to demonstrate the use of default arguments. A C++ program is provided below to illustrate the use of default arguments for simple interest function. Program is as follows:

#include <iostream>
using namespace std;
float si(int p, int n, int r=5)
{
	return (p*n*r)/100;
}
int main()
{
	int p, n, r;
	cout<<"Enter principal amount: ";
	cin>>p;
	cout<<"Enter duration (in years): ";
	cin>>n;
	cout<<"Enter rate of interest: ";
	cin>>r;
	cout<<"Simple interest = "<<si(p, n, r);
	cout<<"Simple interest = "<<si(p, n);
	return 0;
}

Input and output for the above program are as follows:

Enter principal amount: 10000
Enter duration (in years): 5
Enter rate of interest: 10
Simple interest = 5000
Simple interest = 2500

Suryateja Pericherla

Suryateja Pericherla, at present is a Research Scholar (full-time Ph.D.) in the Dept. of Computer Science & Systems Engineering at Andhra University, Visakhapatnam. Previously worked as an Associate Professor in the Dept. of CSE at Vishnu Institute of Technology, India.

He has 11+ years of teaching experience and is an individual researcher whose research interests are Cloud Computing, Internet of Things, Computer Security, Network Security and Blockchain.

He is a member of professional societies like IEEE, ACM, CSI and ISCA. He published several research papers which are indexed by SCIE, WoS, Scopus, Springer and others.