Hello World program sources from Wikipedia: List of Hello world program examples.
Ada
with Ada.Text_IO;
procedure Hello_World is
use Ada.Text_IO;
begin
Put_Line("Hello, world!");
end;
C
#include <stdio.h>
int main(int argc, char *argv[])
{
printf("Hello, world!\n");
return 0;
}
C++
#include <iostream>
using namespace std;
int ...