#include <cstdlib>
#include <string>
#include <fstream>
#include <iostream>
int
main(int argc, char const *argv[])
{
std::ofstream outfile;
if (argc == 1)
outfile.open("output1.txt");
else
outfile.open("output2.txt");
for (unsigned i = 0; i < argc; ++i) {
std::string theArg(argv[i]);
if (i == 1 && "A" == theArg)
outfile << "argv[1] matches\n";
if (i == 2 && "B" == theArg)
outfile << "argv[2] matches\n";
if (i == 3 && "C" == theArg)
outfile << "argv[3] matches\n";
}
if (::getenv("MY_ENV_VAR")) {
std::string MY_ENV_VAR(getenv("MY_ENV_VAR"));
if ("YES" == MY_ENV_VAR) {
outfile << "Environment variable 'MY_ENV_VAR' successfully passed.\n";
}
}
if (::getenv("MY_HOST_ENV_VAR1")) {
std::string MY_HOST_ENV_VAR1(getenv("MY_HOST_ENV_VAR1"));
if ("VAR1" == MY_HOST_ENV_VAR1) {
outfile << "The host environment variable 'MY_HOST_ENV_VAR1' successfully passed.\n";
}
}
if (::getenv("MY_HOST_ENV_VAR2")) {
std::string MY_HOST_ENV_VAR2(getenv("MY_HOST_ENV_VAR2"));
if ("VAR2" == MY_HOST_ENV_VAR2) {
outfile << "The host environment variable 'MY_HOST_ENV_VAR2' successfully passed.\n";
}
}
std::cerr << "This message should go to standard error.\n";
std::cout << "This message should go to standard out.\n";
outfile.close();
return 0;
}