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Closed 10 years ago.
I'm a smartphone app developer.
I want to make a app running in iOS,android,winphone.
I use cocos2d-x platform tool to make this app. it base of c/c++ language.
So,
Dose anyone can tell me How to read and write excel with c/c++
For what purpose? Just reading the file can be done by treating it as an opaque stream of bytes, just like any other file.
I doubt that's what you really mean, though.
If you want to interpret the file's contents, and present/update the calculations, then surely you must realize that the answer to "how" that is done must be gigantic? Excel is a huge, huge, and very old application, probably the result of many millions of lines of code.
Nobody can tell you "how" to interpret that in a simple answer here.
The closest thing you can probably get here is a recommendation on a library to use. I had a quick look, and LibXL was the first one I found for C++. It is a commercial library, and I have no experience with it.
Related
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I'm making a program to setup a server, but I can't find out how to download a file from the internet in the c++ program. Preferably downloading a library or something.
Also, I am still a beginning programmer.
I'm using:
Microsoft Windows 7 Professional 64x
Notepad ++
Borland's C++ compiler v5.1
There are many ways of doing that. The best for you way to go about this, in my opinion, is by using cURL library (aka libcurl). Start from reading some documentation. This example can also be helpful as it does exactly that. And of course you can always go other (less popular?) ways:
Use Qt Network library (example).
Use Poco C++ Libraries (here is some introductory PDF).
Find some other libraries and try them out.
Do it yourself.
Hope it helps.
Well, based on the choice of compiler, I see you want the hard way. WinInet will work. If you feel very adventurous, try windows sockets.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I am reading some introduction of an ancient Chinese game called Mahjong (a bit like poker but far more complicated). I have been spending couple days in writing a program to determine if a given hand is a win hand or not. Do anyone have any idea or know where can I find the free code for that? I only need the part to determine win/lose, I am not looking for the entire project. Thanks.
There is this cool Python library that can be used for scoring of a Mahjong hand given a situation. I know you are working in C++, but since python is highly readable, even to non-python coders, maybe you'll be able to copy/paste and edit the relevant part so you'll be able to use them.
Hope that helps you in some way.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 11 years ago.
I need to implement a simple text encryption in C++ without using any existing framworks. This is purely for educational purpose to learn the in-and-outs and to learn the way to implement such a system. I am not planning to implement this in production code. I can use Windows APIs but it won't be cross platform. I am trying to learn something can work across multiple platforms. the best way to implement this is implement using C/C++. Please share good resources or links in this regard.
Depending on what you actually want, you could look at the CipherSaber project: instructions to implement your own RC4 encryption code for a simple IV+text format.
However this is an academic exercise only: you should never use your own crypto code in production unless you really know what you're doing. You could also read Schneier's Applied Cryptography for a good introduction to all of this stuff.
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Closed 11 years ago.
I need to create a simple application, but speed is very important here. Application is pretty much simple.
It will generate all available chars by saving them to text file. User will enter length that will be used for generating so the application will use recursive function with loop inside.
Will C be faster then C++ in this matter, or it does not matter?
Speed is very important because if my application needs to generate/save to file 10 million+ words.
It doesn't really matter, chances are your application will be I/O bound rather than CPU bound unless you have enough RAM to hold all that in memory.
It's much more important that you choose the best algorithm, and the best data structures to back that algorithm up.
Then implement that in the language you're most familiar with. C++ has the advantage of having easy to use containers in its standard libraries, but that's about it. You can write slow code in both, and fast code in both.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
hey i need c++ program to edit windows registry
One good program is Regedit.exe. It is probably written in C++.
Qt has an excellent framework for editing registy - that is, QSettings. And for bonus points, if you happen to change your mind and go Linux, your code would still work, storing your data in .ini-style configuration files.
Take note that Qt is very fat for a C++ library, but also very functional. There's a crazy lot you can do with it. I also absolutely recommend it for GUI.
There are probably a thousand small C++ wrappers for registry access. Of course I wrote my own, too. See the class RegistryKey in my envvc program. It's only read-only access, but you'll get the idea.