使用while，do-while,for计算0-100之间偶数的和

package kh88_chapter04; public class Sum { public static void main(String[] args) { // TODO Auto-generated method stub int sum=0; /for (int i=0;i<=100;i++) { if(i%2==0) { sum+=i; } } System.out.println("100以内的偶数和是："+sum);/

	/*int i=0;
	while(i<=100) {
		if(i%2==0) {
			sum+=i;
		}
		i++;
	}
	System.out.println("100以内的偶数和是："+sum);*/
	
	int i=0;
	do {
		if(i%2==0) {
			sum+=i;
		}
		i++;
	}while(i<=100);
	System.out.println("100以内的偶数和是："+sum);
}