/tutorial/cecil/c_startup/example.e

 1class EXAMPLE
 2   --
 3   -- This example shows how to start execution from the outside (external C code starts
 4   -- execution before calling Eiffel code).
 5   --
 6   -- Obviously, external C code must provide the C main function. In order to avoid double definition of
 7   -- the main function, one must use option -no_main command  switch of `compile_to_c'.
 8   -- In such a case, the Eiffel root object is accessible only via the predefined C variable
 9   -- `eiffel_root_object'.
10   --
11   -- One must also keep in mind that some internal Eiffel runtime information has to be initialized
12   -- before calling any Eiffel feature. Thus, before the first call to Eiffel features, the external C code
13   -- has to call C function `initialize_eiffel_runtime(argc,argv)'.
14   --
15   --
16   -- To compile this example, use command:
17   --
18   --  se c -no_main -cecil cecil.se example c_prog.c
19   --
20
21create {ANY}
22   make
23
24feature {ANY}
25   make
26      do
27      end
28
29   do_it
30      do
31         io.put_string("Hi from Eiffel world.%N")
32      end
33
34end -- class EXAMPLE