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

###### 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 Java programming using a function. To know more about function click on the function lesson.

Q6) Write a program in Java 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

``````import java.util.Scanner;

public class Q6
{
public static int specialnumber(int num)
{
int s=0,p=1,t,d;
t=num;

if(t>=10 && 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;
}

public static void main(String args[])
{
int n;
Scanner sc=new Scanner(System.in);
System.out.print("Enter a number ");
n=sc.nextInt();
if(specialnumber(n)==1)
{
System.out.print("Special Two Digit Number");
}
else
{
System.out.print("Not Special Two Digit Number");
}
}
}``````

#### Output

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