Here I actually need to tell the computer, "Give me some bytes in ram in which to store a value, and that value's going to be a floating point value."

这里我的确需要告诉计算机，“给我一些字节内存,来存储一个值，那个值将是,浮点型的数值“

哈佛公开课 - 计算机科学课程节选