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Fibonacci series program in python using iterative method

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In this tutorial we are going to learn how to print Fibonacci series in Python program using iterative method.

In this series number of elements of the series is depends upon the input of users. Program will print n number of elements in a series which is given by the user as a input.

Before moving directly on the writing Fibonacci series in python program, first you should know

What is Fibonacci Series?

A Fibonacci series is a series in which next number is a sum of previous two numbers.

 

For example : 0, 1, 1, 2, 3, 5, 8 ……

In Fibonacci Series, first number starts with 0 and second is with 1 and then its grow like,

0

1

0 + 1 = 1

1 + 1 = 2

1 + 2 = 3

2 + 3 = 5 and 

so on…

How our program will behave?

Suppose if someone gives an input 5 then our program should print first 5 numbers of the series.

 

Like if someone given 5 as a input then our Fibonacci series which is written in C should print output as,

0, 1, 1, 2, 3

 

Python program to print Fibonacci series program in using Iterative methods

first,second=0,1
n = int(input("please give a number for fibonacci series : "))
print("fibonacci series are : ")
for i in range(0,n):
    if i<=1:
        result=i
    else:
      result = first + second;
      first = second;
      second = result;
    print(result)

Output:

python program to print Fibonacci series

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