High School/Jr.High 10 PRINT "HELLO WORLD" 20 ENDFirst 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[i]); printf("\n"); }Seasoned professional #include <iostream.h> #include <string.h> class string { private: int size; char *ptr; string() : size(0), ptr(new char[1]) { ptr...