Write and execute a C++ program to

- display the first 25 Fibonacci numbers
- display the Fibonacci series up to 5000.

**PROGRAM**

**1.**

**#include<iostream>**

**using namespace std;**

**int main()**

**{**

**int first=0,second=1,third,i,n;**

**cout<<"Enter how many terms required:";**

**cin>>n;**

**cout<<"The required Fibonacci series is:\n"<<first<<"\n"<<second<<"\n";**

**for(i=2;i<n;i++)**

**{**

**third=first+second;**

**first=second;**

**second=third;**

**cout<<third<<"\n";**

**}**

**return 0;**

**}**

**OUTPUT**

**Enter how many terms required:25**

**The required Fibonacci series is:**

**0**

**1**

**1**

**2**

**3**

**5**

**8**

**13**

**21**

**34**

**55**

**89**

**144**

**233**

**377**

**610**

**987**

**1597**

**2584**

**4181**

**6765**

**10946**

**17711**

**28657**

**46368**

**2.**

**#include<iostream>**

**using namespace std;**

**int main()**

**{**

**int first=0,second=1,third,i,n;**

**cout<<"Enter number upto which series is required:";**

**cin>>n;**

**cout<<"The required Fibonacci series is:\n"<<first<<"\n"<<second<<"\n";**

**third=first+second;**

**while(third<=n)**

**{**

**cout<<third<<"\n";**

**first=second;**

**second=third;**

**third=first+second;**

**}**

**return 0;**

**}**

__OUTPUT__

**Enter number upto which series is required:5000**

**The required Fibonacci series is:**

**0**

**1**

**1**

**2**

**3**

**5**

**8**

**13**

**21**

**34**

**55**

**89**

**144**

**233**

**377**

**610**

**987**

**1597**

**2584**

**4181**

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