c++ - std::getline() 是否完全清空缓冲区？

Question

是 std::getline() 完全清空了缓冲区，还是输入缓冲区中还剩下换行符？

Answer 1

作为the page状态:

If the delimiter is found, it is extracted and discarded (i.e. it is not stored and the next input operation will begin after it).

它应该被丢弃。

查看 this example.两个句子之间的换行符被适本地丢弃。

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回复评论:

(1) istream& getline (istream& is, string& str, char delim);

(2) istream& getline (istream& is, string& str);

Extracts characters from is and stores them into str until the delimitation character delim is found (or the newline character, '\n', for (2)).

是的，换行符作为默认分隔符。

不，输入缓冲区将不再有换行符，因为它会被简洁地丢弃。您不需要自己清洁。