1. Python Program to check Armstrong Number?

   HINT : 153 = 111 + 555 + 333 // 153 is an Armstrong number.

2. Python Program for How to check if a given number is Fibonacci number?

   HINT : A Fibonacci sequence is the integer sequence of 0, 1, 1, 2, 3, 5, 8....

      The first two terms are 0 and 1. 
   
      All other terms are obtained by adding the preceding two terms. 
   
      This means to say the nth term is the sum of (n-1)th and (n-2)th term.

# Program to check Armstrong Number

num = int(input("Enter a Number: "))
sum = 0
num1 = num

while num1>0:
    r = num1 % 10
    sum = sum + (r*r*r)
    num1 = num1 // 10
    
if sum == num:
    print("It is a Armstrong Number")
else:
    print("It is not a Armstrong Number")

Enter a Number: 153
It is a Armstrong Number

# Program to print Fibonacci Numbers

num1 = 0 
num2 = 1
num = int(input("Enter no. of Fibonacci Numbers: "))
print("Fibonacci Series are: ", num1, num2, end=" ")
for i in range(2, num):
    num3 = num1 + num2
    num1 = num2
    num2 = num3
    print(num3, end=" ")

# Program to check if a number is a Fibonacci Number or not

NUM = int(input("\nEnter the number you want to check: "))
 
f1 = 0
f2 = 1
f3 = 1

if (NUM == 0 or NUM == 1):
    print("Given number is fibonacci number")
 
else:
    while f3 < NUM:
        f3 = f1 + f2
        f1 = f2
        f2 = f3
    if f3 == NUM:
        print("Given number is fibonacci number")
    else:
        print("No, It’s not a fibonacci number")

Enter no. of Fibonacci Numbers: 15
Fibonacci Series are:  0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 
Enter the number you want to check: 13
Given number is fibonacci number