These classes allow the various geometric shapes to be constructed with coordinates of either double or float precision.

这些类允许各种几何图形建立在双精度或浮点精度的坐标系上。

If the argument is zero, then the result will be -127 for a float and -1023 for a double.

如果参数为0，则对应的浮点数和双精度数的结果分别是- 127和- 1023。

C-89 data types (include signed and unsigned) short, int, long, long long, float, and double.

C - 89数据类型(包括有符号和无符号)short、int、long、long long、float和double。

The memory space of a float or double value is limited, so some values cannot be represented.

浮点或者双精度浮点的内存空间是限定了的，所以某些值不能被表示。

So I'm printing out line by line a char will take out some number of bytes; a double, some number of bytes; a float; and an int.

所以我将要逐行地打印出一个char类型占了几个字节，一个double类型要占了几个字节，还有float和int类型。