ansaurus

Question

Answer 1

+2 A:

Search for white spaces. If found add \" to the front and the end of the string. That would be an escaped quotation mark.

Simon Linder 2010-02-23 12:46:11

Before enclosing the string in ", search for existing " and prefix them with \. This will handle strings with " inside.

Thomas Matthews 2010-02-23 18:19:45

Answer 2

A:

std::string str = get_your_input_somehow();

if (str.find(" ") != std::string::npos) {
  str = "\"" + str + "\"";
}

Drew Hall 2010-02-23 12:47:55

Shouldn't that be `str.find(' ') != std::string::npos)`?

Manuel 2010-02-23 12:51:12

If there's the whitespace is at the beginning, 0 is returned.

KennyTM 2010-02-23 12:51:33

In any case no good programing when using int as bool.

Simon Linder 2010-02-23 12:52:39

@Manuel--whoops--it was too late at night--you're absolutely right! (editing now)

Drew Hall 2010-02-23 19:45:33

Answer 3

+5 A:

Assuming the STL string s contains the string you want to check for a space:

if (s.find(' ') != std::string::npos)
{
  s = '"' + s + '"';
}

Ton van den Heuvel 2010-02-23 12:48:49

Would it be more efficient to use `'"'` instead of `"\""`?

Rupert Jones 2010-02-23 13:06:31

Yes, it would be. I've edited the answer, thanks.

Ton van den Heuvel 2010-02-23 13:33:37

Double Quoted Strings in C++