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The following is an example of using iteration to find the fibonacci series.
#include <iostream> using namespace std; void fib(int num) { int x = 0, y = 1, z = 0; for (int i = 0; i < num;++) { cout << x << " \"; z = x + y; x = y; y = z; } } int main() { int num; cout << "Enter the number: "; cin >> num; cout << "\nThe fibonacci series: "; fib(num); return 0; }
Output Result
Enter the number: 10 The fibonacci series: 0 1 1 2 3 5 8 13 21 34
In the above program, the actual code exists within the function fib() to calculate the fibonacci series.
void fib(int num) { int x = 0, y = 1, z = 0; for (int i = 0; i < num;++) { cout << x << " \"; z = x + y; x = y; y = z; } }
In the main() function, the user inputs a number. The function fib() is called, and the fibonacci series is printed as shown below-
cout << "Enter the number: "; cin >> num; cout << "\nThe fibonacci series: "; fib(num);