The Evolution of a Programmer
Secondary School
10 PRINT "HELLO WORLD"
20 END
First year in College
program Hello(input, output)
begin
writeln('Hello World')
end.
Senior year in College
(defun hello
(print
(cons 'Hello (list 'World))))
New professional
#include <stdio.h>
void main(void)
{
char *message[] = {"Hello ", "World"};
int i;
for(i = 0; i < 2; ++i)
printf("%s", message );
printf("\n");
}
Seasoned professional
#include <iostream.h>
#include <string.h>
class string
{
int size;
char *ptr;
public:
string() : size(0), ptr(new char('\0')) {}
string(const string &s) : size(s.size)
{
ptr = new char=01Hsize + 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=01Hsize + 1;
strcpy(ptr, chrs);
}
return(*this);
}
int main()
{
string str ( "Hello World" );
cout << str << endl;
return(0);
}
Experienced Hacker
#include <stdio.h>
#define S "Hello, World\n"
main(){exit(printf(S); strlen(S) ? 0 : 1);}
Seasoned Hacker
% cc -o a.out ~/src/misc/hw/hw.c
% a.out
Guru Hacker
% cat
Hello, world.
New Manager
10 PRINT "HELLO WORLD"
20 END
Middle Manager
mail -s "Hello, world." bob@b12
Bob, could you please write me a program that prints
"Hello, world."? I need it by tomorrow.
Senior Manager
% zmail jim
I need a "Hello, world." program by this afternoon.
Chief Executive
% letter
letter: Command not found.
% mail
To:
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout |
