//sum of even & odd from 1 to 100 using while loop

public class SumEvenOdd {

public static void main(String[] args) {
    int num=1,sumOfEven=0,sumOfOdd=0;
    while(num<=100) {
        if(num%2==0) {
            sumOfEven=sumOfEven+num;
        }else {
            sumOfOdd=sumOfOdd+num;
        }   
        num++;
    }
    System.out.println("Sum of even numbers from 1 to 100 = "+sumOfEven);
    System.out.println("Sum of odd numbers from 1 to 100 = "+sumOfOdd);
}

}