如何将双数的两个部分分开并将其转换为C中的int？ [英] How do I separate two parts of a double number and turn it into an int in C?

问题描述

例如，我得到了：



18.75但是我想将它们分成两个不同的变量，18和75？



我尝试了什么：



我尝试过modf函数并转换为int，但是除此之外还有更简单的方法吗？

For example, I got:

18.75 but I want to separate them into two different variables, 18 and 75?

What I have tried:

I've tried the modf function and converted to an int, but is there an easier way to do it other than this?

推荐答案

引用：

但除此之外还有更简单的方法吗？

but is there an easier way to do it other than this?

不，据我所知。提取积分部分很简单：只需将double赋值给整数变量即可。但是，将小数部分转换为整数不太明显。毕竟， modf 功能应该存在。

No, As far as I know. Extracting the integral part is simple: just assign the double to an integer variable. However, transforming the decimal part to an integer is less obvious. After all, there should be a reason the modf function exists.

看一下modf函数

C语言：modf函数（拆分成整数和小数部分） [ ^ ]



以下是语言作者对C和C ++参考书的链接。注意，C是C ++的祖先，所以知道C对C ++总是有用。

C编程语言 - 维基百科，免费的百科全书 [ ^ ]

https://hassanolity.files.wordpress.com/2013/11/the_c_programming_language_2。 pdf [ ^ ]

http：//www.ime.usp。 br / ~pf / Kernighan-Ritchie / C-Programming-Ebook.pdf [ ^ ]



C ++编程语言 [ ^ ]



[更新]

Have a look at the modf function
C Language: modf function (Split into Integer and Fractional Parts)[^]

Here is links to references books on C and C++ by the authors of the languages. Note than C is the ancestor of C++, so knowing C is always useful with C++.
The C Programming Language - Wikipedia, the free encyclopedia[^]
https://hassanolity.files.wordpress.com/2013/11/the_c_programming_language_2.pdf[^]
http://www.ime.usp.br/~pf/Kernighan-Ritchie/C-Programming-Ebook.pdf[^]

C++ Programing Language[^]

[Update]

引用：

我尝试过modf函数并转换为int，但除此之外还有更简单的方法吗？

I've tried the modf function and converted to an int, but is there an easier way to do it other than this?

modf有什么问题？它完全符合你的要求。

What is your problem with modf ? it does exactly what you want.

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