How to provide your own delimeter for cin?

2018-05-30 20:49:30

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.

Thanks for your time.

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
}

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