C#中的数据类型 [英] data type in c#

问题描述

double具有64位大小
十进制具有128位大小
这也是为什么小数的范围小于双精度的原因.

解决方案

因为小数的精度大于双精度的精度.

十进制:28-29位有效数字
双精度:15-16位数字.

要获取更多信息，请在Visual Studio中选择关键字"double"或"decimal"，然后按F1键.双精度指数较大.

就像可以容纳6位数字的整数和可以容纳3位数字(具有三位数的指数)的浮点数之间的区别.
整数的范围是0-999999，而浮点型是0-999E999.
虽然后者可以容纳更大的值，但前者可以更精确-浮动不能容纳999999，最接近的可以是999E3或999000，或者也许是1E6(1000000)


[edit]添加了1E6位-OriginalGriff [/edit]

double has 64 bit size
decimal has 128 bit size
then also why decimal has small range than double.

解决方案

Because the decimal have greater precision than the double.

decimal: 28-29 significant digits
double: 15-16 digits.

To get more information, select the keyword ''double'' or ''decimal'' in visual studio and hit key F1.

Because a decimal has more significant digits than a double, while a double has a larger exponent.

It''s like the difference between an integer that can hold 6 digits, and a float that can hold three, with a three digit exponent.
The range of the integer is 0 - 999999, while the float is 0 - 999E999.
While the later can hold larger values, the former is more accurate - the float can''t hold 999999, the closest it can come is 999E3, or 999000, or perhaps 1E6 (1000000)


[edit]Added the 1E6 bit - OriginalGriff[/edit]

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