Getting a ROS distribution value through c++ code

Question

Is there a way to get the ROS_DISTRO in c++, cz I want to run specific C++ code when ros_distro is melodic, and else if noetic then this code. Ubuntu: 20.04 Thank You.

Answer 1

In C++ you can simply use getenv() to grab environmental variables.

import <iostream>
int main(){
    std::string distro = getenv("ROS_DISTRO");
    std::cout << "Got distro: " << distro << std::endl;
}