16inline_defaultarg.cpp

#include<iostream>
using namespace std;

inline int product(int a, int b) //inline is only used for easy and simple functions otherwise they would take a lot of memory
{
    return a*b;
}
float moneyReceived(float money, float rate = 1.04) //this is a default argument where there is already a value for 'rate'
{
    return money * rate; //default arguments should be written in the end to avoid mixing when calling the function
}
int main()
{
    int a, b;
    cout<<"The value of a is "<<endl;
    cin>>a;
    cout<<"The value of b is "<<endl;
    cin>>b;
    cout<<"The product of a and b is "<<product(a, b)<<endl; //using inline, if this simple function is repeated multiple times, the compile time is even faster
    float money = 100000;
    cout<<"The money "<<money<<" rs will be converted to "<<moneyReceived(money)<<" rs after interest"<<endl;
    cout<<"The money "<<money<<" rs will be converted to "<<moneyReceived(money, 1.1)<<" rs after interest"<<endl;
    //here, in the function call a value is provided to rate which replaces the default value
    return 0;
}