Set local environment variables in C++

by 
NAME

       putenv - change or add an environment variable

SYNOPSIS

       #include &ltstdlib.h>

       int putenv(char *string);

DESCRIPTION
       The  putenv()  function adds or changes the value of environment
       variables.  The argument string is of the form name=value.  If name does
       not already exist in the environment, then string is added  to  the
       environment.   If name does exist, then the value of name in the
       environment is changed to value.  The string pointed to by string becomes
       part of the environment, so altering the string changes the environment.

On Win32 it’s called _putenv I believe.

See SetEnvironmentVariable also if you’re a fan of long and ugly function names.

More Related Contents:

  1. Where are the man pages for C++? [closed]
  2. What is the difference between include_directories and target_include_directories in CMake?
  3. QVector vs QList
  4. What is a good naming convention for vars, methods, etc in C++? [closed]
  5. C++ std::tuple order of destruction
  6. Performance penalty for working with interfaces in C++?
  7. VS 2015 compiling cocos2d-x 3.3 error “fatal error C1189: #error: Macro definition of snprintf conflicts with Standard Library function declaration”
  8. Difference between string.h and cstring?
  9. How can it be useful to overload the “function call” operator?
  10. fatal error C1083: Cannot open include file: ‘xyz.h’: No such file or directory?
  11. How to find Longest Common Substring using C++
  12. Creating OpenGL context without window
  13. how to declare and define global variables in order to access them from all headers/source files properly
  14. Why the sequence-operation algorithms predicates are passed by copy?
  15. How to ignore false positive memory leaks from _CrtDumpMemoryLeaks?
  16. What’s the difference between C and C++ [closed]
  17. how to determine sizeof class with virtual functions?
  18. Check keypress in C++ on Linux
  19. convert string to integer in c++
  20. Reference invalidation after applying reverse_iterator on a custom made iterator
  21. Is a memory barrier required to read a value that is atomically modified?
  22. Save cURL content result into a string in C++
  23. C++11 Implementation of Spinlock using header “
  24. Possible problems with NOMINMAX on Visual C++
  25. Move semantics == custom swap function obsolete?
  26. Generate N random numbers within a range with a constant sum
  27. Are there any downsides to using UPX to compress a Windows executable?
  28. How to assert if a std::mutex is locked?
  29. Displaying the address of a string
  30. Calling a function through its address in memory in c / c++

Leave a Comment