C++: Setenv(). Undefined identifier in Visual Studio

Question

Look my code seems to be correct, according to all the documentation I can find online. My IDE is MS Visual Studio Xpress 4 Windows Desktop 2012, and it\'s compiler is throw

Answer 1

the reason you encountered the linkage error is that, if you take a look at the content of the library of stdlib.h, you will find that, setenv() is not declared there. At the first glance, it is a C standard API, but looks like Windows do not follow all of the standard. Or, you might be able to configure your VS to use CRT instead of Windows runtime, in that case, I think setenv will be identified.