四舍五入将其转换为 int (java)

2022-01-14 00:00:00 rounding int double java

现在我正在尝试这个:

int a = round(n);

其中 n 是 double 但它不起作用.我究竟做错了什么?

where n is a double but it's not working. What am I doing wrong?

推荐答案

片段中round()方法的返回类型是什么?

What is the return type of the round() method in the snippet?

如果这是 Math.round() 方法，当输入参数为 Double 时，它会返回 Long.

If this is the Math.round() method, it returns a Long when the input param is Double.

所以，你将不得不转换返回值:

So, you will have to cast the return value:

int a = (int) Math.round(doubleVar);

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