#include <algorithm>
#include <iostream>
#include <unistd.h>
#include <vector>

extern char **environ;

int main() {
  std::vector<std::string> envs;
  for (char **env = environ; *env != 0; env++) {
    envs.push_back(*env);
  }

  std::sort(envs.begin(), envs.end(),
            [](const auto &lhs, const auto &rhs) { return lhs < rhs; });

  // Search for BAZEL_TEST.
  bool found = false;
  for (const auto &env : envs) {
    std::cout << env << std::endl;
    size_t pos = env.find("BAZEL_TEST");
    if (pos != std::string::npos) {
      found = true;
      break;
    }
  }

  if (!found) {
    return 1;
  }

  return 0;
}

#include <iostream>
#include <vector>
#include <windows.h>

int main() {
  // Get a pointer to the environment block.
  LPCH lpvEnv = GetEnvironmentStrings();

  // If the returned pointer is NULL, exit.
  if (lpvEnv == NULL) {
    std::cerr << "Failed to retrieve environment strings." << std::endl;
    return 1;
  }

  std::vector<std::string> envs;

  // Variable to hold each environment variable.
  LPSTR lpszVariable;
  for (lpszVariable = (LPSTR)lpvEnv; *lpszVariable; lpszVariable++) {
    // lpszVariable now points to the beginning of an environment string.
    envs.push_back(lpszVariable);

    // Move to the next environment string.
    while (*lpszVariable)
      lpszVariable++;
  }

  // Free the memory allocated for the environment strings.
  FreeEnvironmentStrings(lpvEnv);

  std::sort(envs.begin(), envs.end(),
            [](const auto &lhs, const auto &rhs) { return lhs < rhs; });

  // Search for BAZEL_TEST.
  bool found = false;
  for (const auto &env : envs) {
    std::cout << env << std::endl;

    size_t pos = env.find("BAZEL_TEST");
    if (pos != std::string::npos) {
      found = true;
      break;
    }
  }

  if (!found) {
    return 1;
  }

  return 0;
}