079 - Evolution of a Computer Programmer10 PRINT "HELLO WORLD"
20 END
program Hello (input, output)
begin
writeln('Hello World.');
end;
(defun hello
(print
(cons 'Hello (list 'World.))))
#include <stdio.h>
void main(void)
{
char *message[] = ("Hello ", "World.");
int i;
for (i = 0; i < 2; ++i)
printf ("%s", message[i]);
printf ("\n");
}
#include <iostram.h>
#include <string.h>
class string
{
private:
int size;
char *ptr;
public:
string () : size (0), ptr (new char('\0')){}
string (const string &s) : size(s.size)
{
ptr = new char (size + 1);
strcpy (ptr, s.ptr);
}
~string()
{
delete [] ptr;
}
friend ostream &operator << (ostream &, const string &);
string &operator = (const char*);
};
ostream &operator << (ostream &stream, const string &s)
{
return (stream << s.ptr);
}
string &string::operator = (const char *chrs)
{
if (this != &chrs)
{
delete [] ptr;
size = strlen (chrs);
ptr = new char (size + 1);
strcpy (ptr, chrs);
}
return (*this);
}
int main()
{
string str;
str = "Hello World.";
cout << str << endl;
return(0);
}
#!/usr/local/bin/perl
$msg="Hello World.\n";
if ($#ARGV >= 0) {
while (defined($arg=shift(@ARGV))) {
$outfilename = $arg;
open (FILE, ">" . $outfilename) || die "Can't write $arg: $!\n";
print (FILE $msg);
close (FILE) || die "Can't close $arg: $!\n";
}
} else {
print ($msg)
}
l;
#include <stdio.h>
#define S "Hello World.\n"
main() {exit (printf(S) == strlen(S) ? 0 : l);}
% cc -o a.out -/src/misc/hw/hw.c
% a.out
% cat
Hello World.
^D
10 PRINT "HELLO WORLD"
20 END
mail -s "Hello world." bob@b12
Bob, could you please write me a program
that prints "Hello World."?
I need it by tomorrow.
^D
% mail jim
I need a "Hello World." program by this afternoon.
% letter
letter: Command not found.
% mail
To: ^X ^F ^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout