LIMIT = 50000000
#   Define a meaning constant (upper case character by convention)


# Initialize the first two Fibonacci numbers
a, b = 0, 1

# Print the starting number 0, since it is less than the limit
print(a)

# Use a while loop to generate and print the sequence
count = 1
while b < LIMIT:
    print(f"fib({count}): {b}")
    # Update the values for the next iteration
    # The new 'a' becomes the old 'b', and the new 'b' is their sum
    a, b = b, a + b
    count += 1

'''
1.	Initialization: preparatory logic before entering the loop. To be executed once. (count = 1)
2.	Continuing condition: when the loop should be exit.
    (b < LIMIT)
3.	Iteration code: a block of code to be executed. To be executed as many times as the loop continues.
    print(f"fib({count}): b")
    # Update the values for the next iteration
    # The new 'a' becomes the old 'b', and the new 'b' is their sum
    a, b = b, a + b
4.	Update code: update the variables involved in the continuing condition
    count += 1

fib(1): 0
fib(2): 1
fib(3): 1
fib(4): 2  
'''