Compiler error when using "#include <iostream>" and/or "#include <fstream>"

[notverybright]

Hi,
I'm teaching myself C++ using MS Visual Studio Community 2022, so I'm a newbie. I've written some code and I've decided to write the output of the application to text file, so I added these lines to my code:

include <iostream>
include <fstream>

When I build my solution, I get these errors:

1>C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.35.32215\include\yvals_core.h(28): STL1003: Unexpected compiler, expected C++ compiler.
1>C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.35.32215\include\yvals_core.h(29,1): fatal error C1189: #error: Error in C++ Standard Library usage

I can't work out how to fix this, any advice appreciated!

Thank you.

[2kaud]

You haven't provided a full compilable source code. Also include should be #include. This is a minimum test program:

#include <iostream>

int main() {
	std::cout << "Hello world!\n";
}

This source file should have an extension of .cpp. When you installed VS, did you install c/c++ as part of the installation. They are not installed by default.

[notverybright]

Sorry, my mistake, I did use "#include" rather than just "include".

@2kaud - you were right, I had my code in a file with a .c extension. I changed it to a .cpp and it works now. I was using sample code from the pcap libraries which used a .c extension. That will also explain why "#include <string>" didn't work.
I can't believe it was as simple as renaming the file. It highlighted other errors in the code which I sorted ok.

Maybe learning C++ and pcap coding at the same time was a step too far

Thanks a lot for your help, really appreciated!