c++ - does extraction operator remove delimiter?

Question

As I understand the extraction operator>> is delimitered by whitespace. Does the extraction operator remove the delimiter from the stream? E.g., say I have the file

6
Foo
Bar

and the code

ifstream fin(filename);
int x;
fin >> x;

does the filestream still contain the newline character that followed the 6 (potentially messing up subsequent getline statements)? Or was this removed in the extraction process?

Answer 1

消費されないストリームの部分は変更されません。したがって、以降の呼び出しgetlineは空の行を返します。

正確なファイルの内容がわからない場合は、を試してくださいcat -A filename。

Answer 2

Try it out. You can do

ifstream fin(filename);
string x;
fin >> x;
cout<<x<<"foo";

you will notice it ;)