external/bsd/lutok/dist/examples/hello.cpp

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  28
  29 /// \file examples/hello.cpp
  30 /// Minimal example using Lua code to print a traditional hello-world message.
  31
  32 #include <cstdlib>
  33
  34 #include <lutok/state.ipp>
  35
  36
  37 /// Program's entry point.
  38 ///
  39 /// \return A system exit code.
  40 int
  41 main(void)
  42 {
  43     // Initializes a new Lua state.  Every Lua state is independent from each
  44     // other.
  45     lutok::state state;
  46
  47     // Loads the standard library into the Lua state.  Among many other
  48     // functions, this gives us access to print(), which is used below.
  49     state.open_base();
  50
  51     // Pushes the print() function into the Lua stack, then its only argument,
  52     // and then proceeds to execute it within the Lua state.
  53     state.get_global("print");
  54     state.push_string("Hello, world!");
  55     state.pcall(1, 0, 0);
  56
  57     return EXIT_SUCCESS;
  58 }