"iostream" file not found in Xcode 4.2

iphone zxing
Excalibur picture Excalibur · Nov 16, 2011 · Viewed 16.9k times · Source

I'm adding Zxing 1.7(Qr scanner) to my projects.

I upgraded Mac OS X to Lion and xcode4.2, iOS5.0.

Problem is that when I run the project, I always saw "iostream file not found".

I run the scanTest(Qr scanner test sample code prvided from Zxing team) ,but it works well.

So, I compare my projects and scanTest, but I can't find any difference.

What can I do to solve this problem?

Answer

smparkes picture smparkes · Nov 16, 2011

You can only include iostream in C++ or ObjectiveC++ files. If your case is the latter, the file suffix needs to be .mm. So, for example, if your controller class imports QRCodeReader.h and is named MyController.m, it should be renamed MyController.m → MyController.mm.

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