How to provide your own delimiter for cin?

问题

In c, I can use newline delimeter ([^\n]) with scanf. Using which I can store the line. Similarly for cin, I can use getline.

If I have to store a paragraph, I can simulate the functionality using my own special char delimiter like [^#] or [^\t] with scanf function in c.

char a[30];
scanf("%[^\#]",a);
printf("%s",a);

How to achieve the similar functionality with cin object in cpp.

回答1:

istream.getline lets you specify a deliminator to use instead of the default '\n':

cin.getline (char* s, streamsize n, char delim );

or the safer and easier way is to use std::getline. With this method you don't have to worry about allocating a buffer large enough to fit your text.

string s;
getline(cin, s, '\t');

EDIT:

Just as a side note since it sounds like you are just learning c++ the proper way to read multiple deliminated lines is:

string s;
while(getline(cin, s, '\t')){
    // Do something with the line
}

来源：https://stackoverflow.com/questions/7297623/how-to-provide-your-own-delimiter-for-cin