在fgets中是否需要尾随换行符? [英] Is trailing newline necessary in fgets?

问题描述

当我使用'fgets'和'newline'关键字进行搜索时，有很多关于如何删除尾随换行符的文章(这种删除似乎很麻烦).但是，似乎几乎没有什么解释可以包括fgets的换行符.同样在C ++中，"std :: getline"和"std :: istream:getline"方法将不保留换行符.那有什么理由吗?

解决方案

令人满意的(IMHO)说明:
http://www.cplusplus.com/reference/cstdio/fgets/

特别是:

换行符使fget停止读取，但是该函数将其视为有效字符并包含在复制到str的字符串中.

When I search using keywords of 'fgets' and 'newline', there are many posts regarding how to remove the trailing newline character (and such removal appears to be a burden). Yet it seems there is few explaination on how that newline is necessary for fgets to include. Also in C++, the 'std::getline' and 'std::istream:getline' methods will not keep the newline character. So is there a reason for it?

解决方案

Here is satisfying (IMHO) explanation:
http://www.cplusplus.com/reference/cstdio/fgets/

Especially:

A newline character makes fgets stop reading, but it is considered a valid character by the function and included in the string copied to str.

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