how to customize the delimiter in std::getline

Question

I was solving attribute parser on hackerRank but I am stuck with delimiter. I want to grab an element from ("any thing"), in this case it will give me (any thing), but when I do this:

while (getline(ob, item, '""')) {//but its be true when i put single one ('"')
        std::cout << item << "\n";
    }

It gives me this error:

E0304 no instance of "getline" matches the argument list

@RetiredNinja you don't need to escape a double-quote `"` inside of a char literal (single-quotes `'...'`), only inside a string literal (double-quotes `"..."`, if a raw string literal is not used) — Remy Lebeau, May 22 '20 at 04:23
@RemyLebeau Good to know, thanks! If I had a dollar for all those extra backslashes I've typed over the years. :) — Retired Ninja, May 22 '20 at 10:17
@RetiredNinja well, now that we have raw literals, you never have to type them ever again. — Remy Lebeau, May 22 '20 at 15:55

score 1 · Answer 1 · answered May 22 '20 at 03:27

As @RetiredNinja said, you can use '\"' as the delimiter. The code may look like this:

#include <iostream>
#include <string>


int main()
{
    std::string str;
    while (std::getline(std::cin, str, '\"'))
        if (!str.empty() && str[0] != '(' && str[0] != ')')
            std::cout << '(' << str << ")\n";
}

You can change the code based on the rules of the problem. Note that the delimiter would give you "(" first, then the actual word and so on. So you'd have to filter the values you're not interested in.

how to customize the delimiter in std::getline

1 Answers1