Java program to Calculate and Display the sum of 4 digit numbers
1. Java program to Calculate and Display the sum of 4 digit numbers using for loop:
Program:
import java.io.*;
import java.lang.*;
import java.util.*;
class FourDigitSum
{
public static void main(String args[])
{
int sum=0;
Scanner sc=new Scanner(System.in);
System.out.println("Enter the Four digit number");
int no=sc.nextInt();
for(int i=0; i<4; i++)
{
int x=no%10;
sum=sum+x;
no=no/10;
}
System.out.println("The sum of four digit number is "+sum);
}
}
Output:
Enter the Four digit number
1234
The sum of four digit number is 10
2. Java program to Calculate and Display the sum of 4 digits number using while loop:
Program:
import java.io.*;
import java.lang.*;
import java.util.*;
class FourDigitSum
{
public static void main(String args[])
{
int sum=0;
int i=0;
Scanner sc=new Scanner(System.in);
System.out.println("Enter the Four digit number");
int no=sc.nextInt();
while(i<4)
{
int x=no%10;
sum=sum+x;
no=no/10;
i++;
}
System.out.println("The sum of four digit number is "+sum);
}
}
Output:
Enter the four digit number
1234
The sum of four digit number is 10
3. Java program to Calculate and Display the sum of 4 digits number using do while loop:
Program:
import java.io.*;
import java.lang.*;
import java.util.*;
class FourDigitSum
{
public static void main(String args[])
{
int sum=0;
int i=0;
Scanner sc=new Scanner(System.in);
System.out.println("Enter the Four digit number");
int no=sc.nextInt();
do
{
int x=no%10;
sum=sum+x;
no=no/10;
i++;
}while(i<4);
System.out.println("The sum of four digit number is "+sum);
}
}
Output:
Enter the Four digit number
1234
The sum of four digit number is 10