C++笔试题.What is the value of "1.0 + 1.0 + 1.0 == 3.0"?

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C++笔试题.What is the value of "1.0 + 1.0 + 1.0 == 3.0"?
What is the value of "1.0 + 1.0 + 1.0 == 3.0"?
A) true B) false C) There is no guarantee that 1.0 + 1.0 + 1.0 == 3.0 is true.
这是为什么呢?

double型或float型的比较不是这样的,是用两个值差的绝对值小于一个“无穷小”（一般定义为10的负几次方）来判断是否两个浮点数相等~~

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