The C++ standard has std::getenv, but I have to fallback to C's setenv (and be hit with deprecation warnings for including <stdlib.h>).
Is there a reason for this?
C++: Why is there std::getenv but no std::setenv?
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setenv()is operating system specific POSIX function. It's not part of the C programming language standard, so it's not imported in C++ in std:: namespace.