10.求100以内所有偶数（奇数）的和。

1、求偶数和：

package sss;

import java.util.Scanner;

public class S10 {
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		System.out.print("请输入所要求的数字：");
		int number = s.nextInt();
		
		int sum=0;
		for(int i=1; i<=number; i++) {
			if(i%2==0) {
				System.out.println(i);
				sum+=i;
			}
		}
		System.out.println(number+"所有偶数的和为：sum="+sum);
	}

}

2、求奇数和：

package sss;

import java.util.Scanner;

public class S10two {
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		System.out.print("请输入所要求的数字：");
		int number = s.nextInt();
		int sum = 0;
		
		for(int i=1; i<=number; i++) {
			if(i%2!=0) {
				System.out.print(i+"、");
				sum+=i;
			}
		}
		System.out.println();
		System.out.println(number+"所有奇数的和为：sum="+sum);
	}

}