Program in C++ to count heart beats of a person by its age from born

# include <iostream.h>
int main()
{
int age,heartbeats;
cout<<"Enter Age: ";
cin>>age;
cout<<"Enter Number of Heartbeats per min: ";
cin>>heartbeats;

heartbeats = heartbeats * 60; //heartbeats per hour

heartbeats = heartbeats * 24; //heartbeats per day

heartbeats = heartbeats * 365; //heartbeats per year

cout<<"Your Heart has beat "<<heartbeats * age<<" times since you were born."<<endl;

return 0;
}

-----------------------OUTPUT---------------------

 Enter Age: 26

 Enter Number of Heartbeats per min: 70

 Your Heart has beat  956592000  times since you were born.

Program in C++ for Fibonacci Series using recursion function

#include<iostream.h>
fibonacci(int);            //function prototype
void main()
{
int n,i,f;
cout<<"Enter the total elements in the series : ";
cin>>n;
cout<<"\nThe Fibonacci series is:\n";
for(i=0;i<n;i++)
    {
        f=fibonacci(i); //function call
        cout<<f<<"  ";
    }
}

fibonacci(int n)        //function definition
{
    int f;
    if(n==0)
    return 0;
    else if(n==1)
    return 1;
    else
    f=fibonacci(n-1)+fibonacci(n-2);  /*Two recursion function calling itself with different arguments.*/
    return f;
}

-----------------OUTPUT---------------

Enter the total elements in the series :  7

The Fibonacci series is:

0    1    1    2    3    5    8

Note: -When a function call itself within its body is known as recursion function .The function calling has different arguments.

Fibonacci Series means addition of previous two numbers example 0+1=1 , 1+1=2 , 1+2=3 ,2+3=5 , 3+5 =8 , and so on .So the Fibonacci Series is 0,1,1,2,3,5,8,13,21,34

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