不奇怪，for循環(huán)加了分號(hào)還怎么循環(huán)呢

#include?<stdio.h>
int?main()
{
????//?定義變量sum,?num
????int?sum,?num;??
????sum?=?0;
????for(num?=?0;??num<=10;num++)//分號(hào)刪去?
????{
?????sum?+=?num;
????}
????printf("10以內(nèi)數(shù)的和為：%d",?sum);
????return?0;
}