Hello World
老板 “乔治，我需要一个能打印'Hello World!'的程序”初中/高中
10 PRINT "HELLO WORLD"
20 END
大学一年级
program Hello(input, output);
begin
writeln('Hello world');
end.
大学四年级
(defun hello ()
(print (list 'HELLO 'WORLD)))
刚参加工作
#include <stdio.h>
main (argc, argv)
int argc;
char **argv; {
printf ("Hello World!n");
}
老手
#include <stream.h>
const int MAXLEN = 80;
class outstring;
class outstring {
private:
int size;
char str;
public:
outstring() { size=0; }
~outstring() { size=0; }
void print();
void assign(char *chrs);
};
void outstring::print() {
int in;
for (i=0; i<size; i++)
cout << str;
cout << "n";
}
void outstring::assign(char* chrs) {
int i;
for (i=0; chars!=' '; i++)
str = chrs;
size=i;
}
main (int argc, char **argv) {
outstring string;
string.assign("Hello World!");
string.print();
}
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