快乐着飞舞着

---Nothing to do is doing nothing
随笔 - 93, 文章 - 5, 评论 - 56, 引用 - 0
数据加载中……

"Hello World"

1)High School Student
10  PRINT "HELLO WORLD"
20  END

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2)College Student
program Hell(input, output)
begin
  writeln("Hello World")
end.

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3)New Professional
#include ...

void main(void)
{
  char *message[] = {"Hello", "World"};
  int i;
  for(i = 0; i < 2; ++i)
    printf("%s", message[i]);
  printf("\n");
}

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4)Seasoned Professional
#include ...

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& string::operator <<(ostream &os, const string&s){
  return (os << 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;
}

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5)New Manager
10 PRINT "HELLO WORLD"
20 END

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6)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.
^D

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7)Senior Manager
% zmail jim
I need a "Hello, world." program by this afternoon.

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8)Chief Manager
% letter
letter: Command not found.
% mail
To:^X^F^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized.
% logout


posted on 2006-11-10 22:11 快乐着飞舞着 阅读(324) 评论(0)  编辑 收藏 引用

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