# File: fib.py
# compute and print the first few Fibonacci numbers
#
# Matt Bishop, MHI 289I, Fall 2019
#


#
# read in the number to go to
#
try:
    count = int(input("How many Fibonacci numbers should I show? "))
except:
    print("Please enter a positive integer!")
else:
    if count <= 0:
        print("That's not a positive integer!")
    else:
            # initialize series
            fn1 = 0
            fn2 = 1
            print("Fibonacci number 1 is", fn1)
            if count > 1:
                    print("Fibonnaci number 2 is", fn2)
    
                    # compute the sequence and print the terms
                    for i in range(count-2):
                        # get next Fibonacci number
                        fn = fn1 + fn2
                        # announce it
                        print("Fibonacci number", i+3, "is", fn)
                        # advance in seuence
                        fn1 = fn2
                        fn2 = fn