While25. An integer N (> 1) is given. Find the first Fibonacci number, greater than N. (The definition of Fibonacci numbers is given in the exercise While24).

Solution in Python 3:

import random

N = random.randrange(1,100000)
#N = 4181
print("N = ",N)
F1 = F2 = 1
print(F1,end="; ")
print(F2,end="; ")

while F2 <= N:
    F1, F2 = F2, F1+F2
    print(F2,end="; ")
print()
print(F2)