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Fibonacci Series in C++

Fibonacci Series in C++ - Next Digit is equal to the sum of previous two digits.

Sounds Interesting ?

Nope

Okay, Let’s make it interesting

1, 1, 2, 3, 5, 8, 13, 21,…..

Looks Great ?

Nah !

Okay..

2=1+1

3=2+1

5=3+2

8=5+3

Now its clear enough, Let’s see a program to implement Fibonacci series in C++

  • · #include <iostream>

  • · using namespace std;

  • · int main() {

  • · int n1=0,n2=1,n3,i,number;

  • · cout<<"Enter the number of elements: ";

  • · cin>>number;

  • · cout<<n1<<" "<<n2<<" "; //printing 0 and 1

  • · for(i=2;i<number;++i) //loop starts from 2 because 0 and 1 are already printed

  • · {

  • · n3=n1+n2;

  • · cout<<n3<<" ";

  • · n1=n2;

  • · n2=n3;

  • · }

  • · return 0;

  • · }




Output –

Enter the number of elements: 10

0 1 1 2 3 5 8 13 21 34




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