http://www.bing.com:80/search?q=Double-Disc+GraphSearch resultshttp://www.bing.com:80/s/a/rsslogo.gifhttp://www.bing.com:80/search?q=Double-Disc+GraphCopyright © 2026 Microsoft. All rights reserved. These XML results may not be used, reproduced or transmitted in any manner or for any purpose other than rendering Bing results within an RSS aggregator for your personal, non-commercial use. Any other use of these results requires express written permission from Microsoft Corporation. By accessing this web page or using these results in any manner whatsoever, you agree to be bound by the foregoing restrictions.https://www.zhihu.com/question/67840592C语言中，float和double都属于 浮点数。区别在于：double所表示的范围，整数部分范围大于float，小数部分，精度也高于float。 举个例子： 圆周率 3.1415926535 这个数字，如果用float来表示，最多只能精确到小数点后面的6位。而double大约能精确到小数点后面的15位左右。具体精确到几位，跟所用的 编译器 ...Sat, 04 Apr 2026 12:10:00 GMThttps://stackoverflow.com/questions/2386772/what-is-the-difference-between-float-and-doubleI've read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affec...Sat, 04 Apr 2026 12:03:00 GMThttps://stackoverflow.com/questions/4264127/correct-format-specifier-for-double-in-printfFormat %lf in printf was not supported in old (pre-C99) versions of C language, which created superficial "inconsistency" between format specifiers for double in printf and scanf.Sat, 04 Apr 2026 07:09:00 GMThttps://stackoverflow.com/questions/9999221/double-precision-decimal-placesFrom what I have read, a value of data type double has an approximate precision of 15 decimal places. However, when I use a number whose decimal representation repeats, such as 1.0/7.0, I find tha...Tue, 31 Mar 2026 17:29:00 GMThttps://stackoverflow.com/questions/1074474/should-i-use-double-or-floatA double has a much higher precision due to it's difference in size. If the numbers you are using will commonly exceed the value of a float, then use a double. Several other people have mentioned performance isssues. That would be exactly last on my list of considerations. Correctness should be your #1 consideration.Wed, 01 Apr 2026 02:26:00 GMThttps://stackoverflow.com/questions/14221612/difference-between-long-double-and-double-in-c-and-cPossible Duplicate: long double vs double I am unable to understand the difference between between long double and double in C and C++. Can anyone help?Fri, 03 Apr 2026 09:33:00 GMThttps://stackoverflow.com/questions/17603940/why-would-you-use-float-over-double-or-double-over-long-doubleI understand that float has a smaller range than double making it less precise, and from what I understand, long double is even more precise (?). So my question is why would you want to use a variable that is less precise in the first place? Does it have something to do with different platforms, different OS versions, different compilers?Wed, 01 Apr 2026 22:58:00 GMThttps://stackoverflow.com/questions/16863826/whats-the-difference-between-long-float-and-double-in-cPromise. But, in C++, when calling scanf and printf, the notation used to specify a double is "%lf", and that stands for long float, right? So while a float is less precise than a double, a LONG float (presumedly called long float because it can be "longer" by having more terms) is the same accuracy and therefore essentially the same thing?Fri, 03 Apr 2026 17:47:00 GMThttps://www.zhihu.com/question/357492434double** 是指向 double* 类型的指针类型。 区别不是很显然的吗？ double [5] 类型能隐式转换成 double* 类型，但它们不是同一类型。 可以考虑一下 short 和 long 这两种类型是能相互隐式转换的，但它们显然没有因此变成同一类型。Fri, 03 Apr 2026 15:03:00 GMThttps://stackoverflow.com/questions/11110130/double-and-accuracyUsing long double I get 18/19 = 0.947368421052631578..., and 947368421052631578 is the repeating decimal. Using double I get 0.947368421052631526... However, the former is correct. Why such an inco...Wed, 01 Apr 2026 13:18:00 GMT