Fibonacci Series or Sequence
2nd number = 1
3rd number = 0+1= 1
4th number = 1+1= 2
5th number = 1+2= 3
And so on.
The Fibonacci Sequence can be written as 0,1,1,2,3,5,8,13........
C++ program to find Fibonacci Series upto given range.This C++ program use simple logic to get the about of writing code in C++ for Fibonacci Series
Fibonacci Series program logic explanation
if part will run. let input is equal to 5
Before loop variables values
The Fibonacci numbers or Fibonacci series or Fibonacci sequence has first two numbers equal to 1 and 0 and the further each number is consist of the addition of previous two numbers1st number = 0
2nd number = 1
3rd number = 0+1= 1
4th number = 1+1= 2
5th number = 1+2= 3
And so on.
The Fibonacci Sequence can be written as 0,1,1,2,3,5,8,13........
C++ program to find Fibonacci Series upto given range.This C++ program use simple logic to get the about of writing code in C++ for Fibonacci Series
- #include<iostream>
- using namespace std;
- int main()
- {
- int range, first = 0, second = 1, fibonicci=0;
- cout << "Enter Range for Terms of Fibonacci Sequence: ";
- cin >> range;
- cout << "Fibonicci Series upto " << range << " Terms "<< endl;
- for ( int c = 0 ; c < range ; c++ )
- {
- if ( c <= 1 )
- fibonicci = c;
- else
- {
- fibonicci = first + second;
- first = second;
- second = fibonicci;
- }
- cout << fibonicci <<" ";
- }
- return 0;
- }
Fibonacci Series program logic explanation
- Before writing C++ code we understand that what is Fibonacci Series and in what sequence numbers are occurs
- After understanding mathematically Fibonacci series completely we thought it in the form of C++ code
- The Fibonacci series is infinite but we cant make a program that display an infinite output
- In above program we take input the range in integer upto which Fibonacci series will be displayed
- For this purpose a for loop has been taken which starts from 0 and terminates less than range for example if Input is 5 then for loop will run from 0 to 4.
- In for loop if variable c is less or equal than 1 in this case if statement will be executed and if c is greater than 1 else part will be executed for greater than 1
if part will run. let input is equal to 5
Before loop variables values
first = 0, second = 1, Fibonacci=0;
After input range=5
Values are changing in the following sequence
After input range=5
Values are changing in the following sequence
in below table c representing the for loop iterations
c first second Fibonacci Output
0 0 1 0 0
1 0 1 1 0 1
2 0 1 0+1=1 0 1 1
1 1 1
3 1 1 1+1=2 0 1 1 2
1 2 2
4 1 2 1+2=3 0 1 1 2 3 its final output
2 3 3
Image View Of Program (Click on Image To Enlarge)
Fibonacci series in C++ image Code
c first second Fibonacci Output
0 0 1 0 0
1 0 1 1 0 1
2 0 1 0+1=1 0 1 1
1 1 1
3 1 1 1+1=2 0 1 1 2
1 2 2
4 1 2 1+2=3 0 1 1 2 3 its final output
2 3 3
Image View Of Program (Click on Image To Enlarge)
Fibonacci series in C++ image Code
 |
| Fibonacci series C++ Code |
If you have any queries comment below.
