6 how to make simple Ada program

If gnat is not installed, install it (on linux) using something similar to

sudo apt-get install gnat-4.6
 

write the following code in file called hello_world.adb

with ada.text_io; use ada.text_io; 
procedure hello_world is 
 begin 
   put_line("hello world"); 
end hello_world;
 

compile using

gnatmake hello_world.adb 
 
         gcc-4.6 -c hello_world.adb 
         gnatbind -x hello_world.ali 
         gnatlink hello_world.ali
 

Run it using ./hello_world