QT - C++ Adding char ' " ' to QString

Question

I need to compose a string like:

<page myIndex = "1">

where 1 is the value of a variable stored in memory.

My fist try:

QString str = "<page pageIndex = " + myVar + ">";

But it does not contain the ' " ' around the myVar value. I've tried with ' only, like this:

QString str = "<page pageIndex = " + '"' + myVar + '"' + ">";

but it gives compile error.

Possible duplicate of [using \ in a string as literal instead of an escape](https://stackoverflow.com/questions/12103445/using-in-a-string-as-literal-instead-of-an-escape) — eyllanesc, Apr 03 '18 at 09:05
I would do it like: `QString str = QString("").arg(myVar);`. This will work even if `myVar` is an integer. — vahancho, Apr 03 '18 at 09:11
@Elena, you are wrong - it results `` which is what OP wants. — vahancho, Apr 03 '18 at 09:16
@vahancho but I am printing it and it ends out like I said, which is not the result I asked for... — Ale, Apr 03 '18 at 09:18
@Elena, that's because `qDebug` inserts quotation marks around strings and escapes existing ones. You may use the following statement to print it out without quotes: `qDebug().noquote() << QString("").arg(myVar);`. — vahancho, Apr 03 '18 at 09:28

score 3 · Accepted Answer · answered Apr 03 '18 at 09:36

3

There are already several answers for your problem but I'd like to add one more to the list:

auto str = QString("<page pageIndex = \"%1\">").arg(myVar);

Seems to be a bit more elegant from my point of view and gets the job done.

answered Apr 03 '18 at 09:36

Dusteh

1 Answers1