Answers for "fibonacci series c++ formula"

fibonacci series in c++

#include <iostream>
using namespace std;
int main()
{
	int num = 1, pre_num = 0, sum, n;
	do
	{
		cout << "Enter number of terms 'n'of Fibonacci series: ";
		cin >> n;
		cout << "Fibonacci series: ";
		for (int i = 0; i < n; i++)
		{
			sum = num + pre_num;
			pre_num = num;
			num = sum;
			cout << num << " ";
		}
	return 0;
}

fibonacci series in c++

#include <iostream>
using namespace std;

int main ()
{
    int num1, num2, num3, input; 
    num1 = 0;
    num2 = 1;
    cout << "How many nums in sequence do you want to see: "; 
    cin >> input; 
    cout << num1 << " " << num2 << " "; 

    for(int i = 2; i < input; i++) // runs through every element but first two 
    {
        num3 = num1 + num2; 
        cout << num3 << " "; 
        num1 = num2; 
        num2 = num3; 
    }
    
    return 0;
}