# Input a number and check if it is a special two-digit number or not using a function in Python

###### Function - Question 6

In this question, we will see how to input a number and check if it is a special two-digit number or not in Python programming using a function. To know more about function click on the function lesson.

Q6) Write a program in Python to input a number and check if it is a special two-digit number or not using a function. The function should return 1 if the numbers is a special two-digit number else return 0.

A special two-digit number is such that when the sum of its digits is added to the product of its digits, the result is equal to the original two-digit number.

```Example: 59 is a special two-digit number.
Sum of its digits 5+9 = 14
Product of its digit 5*9 = 45
Sum of sum and product of the digits 14+45 = 59```

#### Program

``````def specialnumber(num):
s=0
p=1
t=num

if t>=10 and t<=99:
while t>0:
d=t%10
s=s+d   # sum of digits
p=p*d   # product of digits
t=t//10

if s+p==num:
return 1

return 0

# main program
n=int(input('Enter a number '))
if specialnumber(n)==1:
print('Special Two Digit Number')
else:
print('Not Special Two Digit Number')``````

#### Output

```Enter a number 59
Special Two Digit Number```