Fibonacci Series

Fibonacci Series

This program will help you to print Fibonacci series on your console screen.. If you don't know about Fibonacci series it is something like this:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55,......................

A new number in the series comes after the sum of last two numbers in the series like 0 + 1 = 1, so the third number is 1 and then 1 + 2 = 3, so the next number is three and so on...

Here is the output of the program I made:

Code:

// Ahmad Mukhtar (www.cppfuzz.com)
/*
  ______ .______   .______    _______  __    __   ________   ________  
 /      ||   _  \  |   _  \  |   ____||  |  |  | |       /  |       /  
|  ,----'|  |_)  | |  |_)  | |  |__   |  |  |  | `---/  /   `---/  /   
|  |     |   ___/  |   ___/  |   __|  |  |  |  |    /  /       /  /    
|  `----.|  |      |  |      |  |     |  `--'  |   /  /----.  /  /----.
 \______|| _|      | _|      |__|      \______/   /________| /________|
                                                                       
*/
#include <iostream>
using namespace std;
void main()

{
 int num,c,i; // declaration
 int a=0,b=1,sum=0; // initiallization
 cout << "Enter a number: ";
 cin >> num; // This input will give us info that how many numbers of the series user wants to see
 for (i=0;i<num;i++)
 {
  if (i<=1)
  {
   c=i; // This condition is for printing 1 two times for series (0,1,1,2....)
  }
  else
  {
   c=a+b; // adds the last two numbers
   a=b; // assigns new number to the old variable
   b=c; // same as above
  }
  cout << c << "\t";
  sum = sum + c; // this is to print the sum of all the numbers of the series printed.
 }
 cout << endl;
 cout << endl;
 cout << "The sum of all the numbers is: " << sum;
 cout << endl;
}