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Asked: 2026-05-19T04:11:51+00:00

this is probably a dumb question, but I couldnt find the answer I was

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this is probably a dumb question, but I couldnt find the answer I was looking for. Also, I was unsure if this was a C++ question or a VS2010 question, but the answer I’m looking for is that of a technical POV, so I ended up here.

When you start a new Console Application project in VS2010, it automatically includes stdafx.h, which in turn includes stdio.h.
The answers I found regarding stdio.h vs. iostream was more or less:

stdio.h was used in C and iostream is
used in C++

I dont know if this is right or wrong, but…

My question is: Why is stdio.h still automatically included in C++ projects? Wouldnt iostream be sufficient?

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1 Answer

  1. Editorial Team

    IO streams in older C++ implementations were pretty slow, leading programmers to keep using stdio.h. Apparently, that got included in stdafx.h in the past and cannot be removed from that header anymore as removing it would break existing code.

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