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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