Write a Java program to find the sum of all even numbers between 1 to n. Suppose, if the value of n is 10 then we will calculate the sum of all the even numbers between 1 to 10.
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Java Program to Find Factorial of a Number
What is Even Number ?
A even number is a number which is divisible by 2. For example - 2, 4, 6, 8 etc.
Logic to Find the Sum of all even numbers
i) Take a value of n as input from a user.
ii) Run a loop from 1 to n and check whether a number is divisible by 2. If it's a divisible by 2 then add the value.
Output :
Enter a number
20
The sum of all even numbers between 1 to 20 is 110
Program to add two numbers in Java
Java Programs
Java Program to Find Factorial of a Number
What is Even Number ?
A even number is a number which is divisible by 2. For example - 2, 4, 6, 8 etc.
Logic to Find the Sum of all even numbers
i) Take a value of n as input from a user.
ii) Run a loop from 1 to n and check whether a number is divisible by 2. If it's a divisible by 2 then add the value.
Java Program to Find the Sum of All Even Numbers
import java.util.*;
public class EvenNumbers {
public static void main(String[] args) {
int n, sum = 0;
System.out.println("Enter a number");
Scanner in = new Scanner(System.in);
n = in.nextInt();
//Sum of all even numbers between 1 to n
for(int i = 2; i <= n; i++) {
/*If number is divisible by 2,
*then it's a even number
*/
if(i % 2 == 0) {
sum = sum + i;
}
}
System.out.println("The sum of all even numbers between 1
to " + n + " is " + sum);
}
}
Output :
Enter a number
20
The sum of all even numbers between 1 to 20 is 110
Program to add two numbers in Java
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