Re: A question in TC++PL!

From:

"Jim Langston" <tazmaster@rocketmail.com>

Newsgroups:

comp.lang.c++

Date:

Sat, 4 Aug 2007 13:56:08 -0700

Message-ID:

<KK5ti.28$Tu1.13@newsfe12.lga>

"Guofu Chen" <gchen@mathworks.com> wrote in message
news:f92or2$lpf$1@fred.mathworks.com...

Hi,

In TC++PL, Chapter 10, there is an exercise which ask us to modify the
following program:

#include <iostream>

int main()
{
   std::cout << "Hello, world!/n" ;
   return 0;
}

so that the output would be:

  Initialize
  Hello, world!
  Clean up

but we should not change main().

I believe we will have to modify the constructor and desctructor of class
"ostream" so that the constructor of "ostream" will output
Initialize
and the destructor of "ostream" will output
Clean up

But I don't know if my idea is correct. Is there better idea? Thanks!

One simple way:

#include <iostream>

class Foo
{
public:
    Foo() { std::cout << "Initialize\n"; }
    ~Foo() { std::cout << "Cleanup\n"; }
};

Foo Bar;

int main()
{
    std::cout << "Hello, world!\n" ;
    return 0;
}

Although I'm not sure what they're actually looking for.