list conda environments

To list conda environments in C++, you can use the popen function to execute the conda env list command and capture its output. Here are the steps to achieve this:

1. Include the necessary header files:

#include <iostream>
#include <cstdio>

1. Define a function to execute the command and capture its output:

std::string exec(const char* cmd) {
    char buffer[128];
    std::string result = "";
    FILE* pipe = popen(cmd, "r");
    if (!pipe) {
        return "Error: failed to open pipe.";
    }
    while (!feof(pipe)) {
        if (fgets(buffer, 128, pipe) != NULL) {
            result += buffer;
        }
    }
    pclose(pipe);
    return result;
}

1. Call the function to execute the command and store the output:

std::string output = exec("conda env list");

1. Process and display the output:

std::cout << output;

This code snippet executes the conda env list command and captures its output. It then prints the output to the console. You can further process the output string if needed.