How to set env variable and start a process in C?

Question

How to set an environment variable and start a process in ANSI C for Windows? If possible I want to avoid using any Windows API for this.

Answer 1

Assuming portability is your reason for specifying ANSI C, you can do exactly what you want with the POSIX function _execve:

• MSDN CRT Reference: _execve

This is a portable function that spawns a new child process and allows you to supply an array of environment settings.