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Comments:
<0> Anything that asks for a char* should also expect a size, naturally.
<1> ok
<0> A static array would work just as well there, of course.
<0> char myBuffer[100] = {0};
<0> You just don't get the niftiness of std::vector.
<1> the content of the vector are stored in contiguous manner ?
<0> slimD: Yes
<1> hum, that's good then :)
<0> DoIt: This instructor of yours... I don't know.
<0> slimD: Keep in mind that std::string has no such guarantee
<1> but when you try to add some kind of data to the vector and there is no place after it ?
<0> slimD: You have to expand the vector.
<1> the vector will copy all the content to another place ?
<0> Yes.
<1> waaw
<1> this will slow hard the application
<0> That's why you should usually pre-allocate vectors to some sane size.
<0> Like I did above, to 100.
<1> yes
<1> ok, thanks a lot
<1> back to work
<2> Solamente, i defined an object of fstream ifile, opened with ios::in mode. after reading up to the end, and when i called tellg(), it returned -1
<0> Did your instructor cover operators << and >> at all?
<2> nope :P
<0> You instructor is an idiot.
<0> http://www.parashift.com/c++-faq-lite/input-output.html
<0> Read that.
<2> he told that are called insertion and extraction operators
<0> That's a far better intro to C++ I/O
<2> :D
<0> At least he got that right.
<2> okay, thanks Solamente.
<2> what this line means? std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
<2> what cin is ignoring?
<0> It ignores (skips over) every character in the input stream until it encounters '\n'
<0> Or until it reads the number of characters in the first parameter.
<0> Which is such a large number, it's not likely to happen.
<2> oh like, while((ch=getchar())!='\n'); ???
<0> Pretty much
<2> hmm.. :))
<2> but, if i say cin.clear(), it clear the whole buffer, right?
<0> Not necessarily. .clear() clears the state, not the contents.
<2> is there anyother easy way to clear the inputstream? i mean, if a '\n' is left in the buffer.
<2> am not saying that the aboveone is tough... okay can i say like cin.ignore(100,'\n')
<2> ??
<2> stupid me. seems i can..
<2> as you explained it clearly... dont mind.. :)
<0> The reason for std::numeric_limits<std::streamsize>::max() is that it's the maximum number of characters the stream can hold.
<0> std::streamsize is the type of the variable that holds the stream size, and std::numeric_limits<T>::max() tells you the maximum numeric value that type T can hold.
<2> cool... now its clear... so sweeet
<2> can i apply this to any type of object?
<0> Apply what?
<2> i mean, int, float, double etc
<0> Yes
<2> to get the max size
<2> okay
<2> onr doubt, so in C++, is there #defines like INT_MAX or is it using the above said method?
<0> That's there, but there's really no reason to use it.
<0> The numeric_limits code will optimize down to the exact same thing in the compiled code.
<2> compatibility with C. :))
<0> If you're using C++ streams, that's out the window anyway.
<2> yeah
<0> But for this particular case, you really don't want to use INT_MAX.
<0> Because you don't know what the type of std::streamsize is. Nor do you care.
<0> You let the compiler figure that out for you.
<2> ofcourse
<0> Hence, the beauty of template meta-programming (which is what this is).
<2> i really need to get in to STL.
<2> though, that stupid wont teach.
<3> so get a book
<0> A semantic note... the STL is a subset of the standard library. But a very interesting one.
<2> i thought STL == Standard library?
<0> STL covers containers and algorithms, whereas the standard C++ library includes streams, strings, and a few other things.
<3> Standard Template Library
<2> is there anything more in STL ?
<3> -> template <-
<2> i read, standard C++ library ==STL
<0> Streams and strings are templates, too. That's not the whole answer, Tamama.
<4> the STL is an ugly template based library with weird method names like push_back() for vectors
<0> DoIt: No. STL is a subset.
<2> okay...
<3> mr^man: heh
<4> and bind_1st
<3> Solamente: No it is not, but it should give a good indication that there is something else :)
<0> No, it's just confusing.
<4> and for_each which promotes non-locality
<5> ...huh?
<0> rdragon: Don't feed the troll.
<5> /nod
<0> He doesn't know what he's talking about.
<4> troll: anyone who doesn't agree with the mainstream opinion in a channel
<4> sheep: everyone who does
<0> DoIt: You'd be better served by the book "Accelerated C++"
<6> so everyone's a troll or a sheep?
<0> And you might manage to still pick up some tidbits from this instructor of yours.
<2> Solamente, here that book is not available. i tried to get
<6> that seems a bit, uh, harsh
<0> Where's "here"?
<2> in asian continent
<0> And does Amazon ship there?
<4> pretty much!
<3> ask the store to order it for you
<4> although it's pretty mainstream to agree that for_each is mostly useless, and mem_fun and such are absurd
<4> however BOOST_FOREACH solves some of this
<2> Tamama, indian edition is not available. that means, i need to pay the money in Dollars... that will be some thing like 3times the cost of the books which are avilable in india
<2> i can get C++ programming language book for less than 7$(indian money) here. but i think, there it will be pretty more than that
<0> Well, I recommend that book because it's the best C++ tutorial I've ever seen.
<0> I wish it had been around when I was learning.
<2> ofcourse, the quality of paper, printing and all will be not as good as western edition
<7> same here
<7> I had ****e books
<3> DoIt: anyway the issue you have is not that you can not get the book, but that you made the decision not to buy it
<0> I learned from the Stroustrup book. While an excellent reference, it's a lousy tutorial.
<3> and i dont say that is bad, mind you :)
<7> i agree
<2> Tamama, nope.. i asked them to try to get it..
<3> Solamente: definately so lol
<7> I learned from a ****e C book telling me its C+++
<2> same like my professor, teaching C in C++and telling, that is what C++ is .. :D
<8> hello, i have a question.
<9> wtwtwt: Just ask.
<8> i am currently learning c++, but i can't figure out which are the objects
<0> Well...
<0> In C++ parlance, an object is a named region of memory.
<2> instance of any cl*** is an object. :)
<0> But you're probably expecting the OO answer.
<2> i guess, that might be the OO answer
<0> There's also the issue that in C++, you can use objects without relying on the OO concepts of inheritance and polymorphism.
<0> STL does this, for example, intentionally avoiding cl***ic OO design.
<0> Now that I've confused you, what exactly *are* you asking?
<2> hahahahaha
<8> wait, i had something to do
<8> :)
<8> i'm reading the chapter about cl***es
<0> *The* chapter?
<0> Of what book?
<8> and in one part when it explains about the public and private part of a cl***
<6> *the* book, surely
<8> third edition c++, bjarne str.
<0> Okay.
<8> it says that in that way only member functions can dirrectly manipulate objects
<8> so at that point i thaught that the private members are the objects
<8> but now, it says about static member
<8> and it says
<0> wtwtw: A more accurate phrasing would have been "only member functions can directly manipulate the state of the object"
<0> That's what he intended, I'm sure.
<0> The data members of an object represent its state.
<8> that a function that needs access to members of a cll***, yet doesn't need to be invoked for a particular object is called a static member function
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