class ForTest3 { public static void main(String[] args) { //Çó³ö1-100Ö®¼äżÊýºÍ /* //¶¨ÒåÇóºÍ±äÁ¿ int sum = 0; //ͨ¹ýforÑ­»·»ñȡÿһ¸öÊý¾Ý for(int x=1; x<=100; x++) { //°ÑÊý¾ÝÀÛ¼Ó sum += x; } //Êä³ö½á¹û System.out.println("1-100Ö®ºÍ£º"+sum); System.out.println("---------------"); */ //żÊý:Äܱ»2Õû³ýµÄÊý¾Ý //ÈçºÎÅжÏÊý¾ÝÊÇ·ñÄܹ»±»Õû³öÄØ? x%2 == 0 /* int sum = 0; for(int x=1; x<=100; x++) { if(x%2 == 0) { sum += x; } } System.out.println("1-100µÄżÊýºÍ£º"+sum); */ int sum = 0; for(int x=0; x<=100; x+=2) { sum += x; } System.out.println("1-100µÄżÊýºÍ£º"+sum); } }