High school/Jr. High 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> main (argc,argv) int argc; char **argv; { printf ("Hello World!\n"); } Seasoned pro #include <stream.h> const int MAXLEN = 80; class outstring; class outstring { private: int size; char str[MAXLEN]; public: outstring() { size=0; } ~outstring() {size=0;} void print(); void assign(char *chrs); }; void outstring::print() { int i; ...