Feel free to play around.

== code(c) |
#include <stdio.h>
 
int main(int argc, char *argv[]) {
    int i;
 
    printf("TESTING: %s\n", argv[0]);
    printf("parameters: \n");
 
    for (i = 1; i < argc; ++i)
        printf(" %s ", argc[i]);
 
    return 0;
}
==
 
== code(pas) |
program testing;
 
var
    i, a: integer;
 
begin
 
  writeln('Hello world');
 
  for i:= 1 to 9 do
    begin
      read(a);
      writeln('Ai tastat ', a);
    end;
end.
==
 
== code(pas) |
program testing;
 
var
    i, a: integer;
 
begin
 
  writeln('Hello world');
 
end.
==

Uuuuu, what does this button do?