java num%2 在java中是什么意思？
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what does num%2 mean in java?
提问by studentS
this is the code fragment. I'm not too sure what num%2 is though. % would give the remainder, so does that mean that the remainder of num must be 2?
这是代码片段。我不太确定 num%2 是什么。% 会给出余数，那么这是否意味着 num 的余数必须是 2？
int num = 1, max = 20;
while (num < max)
{
if (num%2 == 0)
System.out.println(num);
num++;
}
回答by JRowan
num%2==0
means the remainder of num divided by two which if something is divided by two the only remainder it could have is either 0 or 1, so its taking the remainder of dividing num by 2 and checking if it is equal to 0
表示 num 除以 2 的余数，如果某物被二除，则其唯一的余数是 0 或 1，因此它取 num 除以 2 的余数并检查它是否等于 0
