# Java Programming : Sum of odd numbers

#### Example

```java
Input
5
Output
9 
```

#### **Required to know**

#### Use of **Variables, Use of different operators like assignment or arithmetic operators, Use of methods like System. out. print(), and use for loop, and Use of Data types**

#### Steps

* The program asks the user for a number, which gets stored in a variable called `n`.
    
* The program also sets up a variable called `sum` to keep track of the sum of odd numbers.
    
* It then uses a `for` loop to go through the numbers from 1 to `n`.
    
* During each iteration, the program checks whether the current number is odd (i.e. not divisible by 2).
    
* If the number is odd, it adds it to the `sum` variable.
    
* After the loop ends, the program prints the final value of `sum`, which represents the sum of odd numbers from 1 to `n`.
    

#### Program

```java
import java.util.Scanner; 
public class Mavenproject1 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in); 
        int n = sc.nextInt(); 
        int i;
        int sum = 0; 
        for(i = 1; i<=n; i++){
            if(i%2!=0){
                sum = sum + i; 
            }
        }
        System.out.print(sum + " "); 
    }
}
```