Input a number and count digits using a function in Java
Function - Question 1
In this question, we will see how to input a number and count how many digits are there in it in Java programming using a function. To know more about function click on the function lesson.
Q1) Write a program in Java to input a number and count how many digits are there in it using a function.
Program
import java.util.Scanner;
public class Q1
{
public static int countdigit(int num)
{
int dc=0;
while(num>0)
{
dc=dc+1;
num=num/10;
}
return dc;
}
public static void main(String args[])
{
int n;
Scanner sc=new Scanner(System.in);
System.out.print("Enter a number ");
n=sc.nextInt();
System.out.print("Total Number of Digits = "+countdigit(n));
}
}Output
Enter a number 42863 Total Number of Digits = 5
