C++ Workshop - Getting Started with C++ (Ch. 1 & 2)

Jeromy Walsh · 2008-05-18T16:41:20

Welcome to the GDNet C++ Workshop – Ch. 1 & 2For a complete introduction to this workshop, please look here.Workshop Overview This workshop is designed to aid people in their journey to learn beginning C++. This workshop is targeted at highly motivated individuals who are interested in learning C++ or who have attempted to learn C++ in the past, but found that without sufficient support and mentoring they were unable to connect all the pieces of this highly complex but powerful programming language. This is a 'guided' self-teaching C++ workshop. Each student is responsible for taking the time to read the material and learn the information. The community and tutors that arise out of this workshop are here for making the learning process run more smoothly, but are not obligated to baby-sit a person's progress. Because everyone will be working from the same textbook (Teach Yourself C++ in 21 days 5th Ed.), students may find it easier to get answers to the specific questions they might have. There is no minimum age requirement, and there is no previous programming experience required. Additionally, this workshop does not attempt to defend C++ as a language, nor does it attempt to demonstrate that C++ is either more or less useful then other programming languages for any particular purpose. People who intend to start a discussion about the differences between C++ and ANY other languages (except as are relevant to a particular discussion), are encouraged to do so elsewhere. This workshop is for educational, not philosophical discussions. Quizzes & Exercises Each chapter will have quizzes and exercises. Please try and answer them by yourself. If you try with reasonable effort but are unable to answer the questions or complete the exercises, feel free to post a clarification question here on the thread. Tutors, myself, or others will do the best we can to point you in the right direction for finding the answer. Chapter 1 – Getting Started, Chapter 2 – The Anatomy of a C++ ProgramIntroduction Greetings! Most weeks will be 7 days, beginning on Monday and ending on Sunday, however as this week starts on Thursday, and is the first “week” in the class, we will extend it to a full 10 days to get on a better schedule and give people a chance to obtain their textbooks in the mail. Additionally, as the topics are relatively straight forward, requiring little programming, etc…Week 1 will be a combination of the first 2 chapters. Chapter 1 is about 16 pages and chapter 2 is an additional 14 pages. Participants have 10 days ( ending Sunday, June 10th ) to read the first two chapters, at which point we will move on to the next chapter. Participants are welcome to post their questions for these chapters within this thread and myself, the tutors, and other participants will do the best we can to answer your questions. As the thread is likely to grow to a hundred or more posts, the C++ workshop threads will be closely moderated. Discussions which become narratives, flame-wars, or philosophical will either be removed or moved to another forum, unless entirely relevant to the current chapters. If you have trouble installing your compiler or getting “Hello World” to build, please ask for help. You will not be able to move forward with the workshop until you’ve done those two tasks successfully. Good Luck! Finally, feel free to post quiz-like questions after about 5 days. This will give people an opportunity to test their knowledge and understanding after they’ve had a chance to absorb the information. For questions which require further research then what is in the book, mark the question with an [Extra Credit] tag. Topical Outline of the Reading (Not literal due to copyrights) A History of C++ Which language should be learned first C or C++? How does C++ compare to Java and C#? An introduction to Managed C++ The ANSI Standard Getting in the right mindset to program How an .exe gets created Building your first program. – “Hello World” An introduction to compiler errors A review of Hello World An introduction to “Console Out” An introduction to the Standard Namespace Commenting your code An introduction to functions The difference between Methods and Functions Additional Resources None... Creating and Building a Project w/ VC++ .NET 2005It has come to my attention that the instructions for creating a project/file in the book on pages 19-20 are for Visual C++ 6. Visual C++ .NET 2005 is actually version 8. The correct approach for .NET 2005 is: Step 1: Create an empty project File->New->Project Select 'Win32' from Project types Select 'Win32 Console Application' from the Templates Type the name of the project and the location in the edit box near the bottom. Click OK When the dialog box appears click on "Application Settings" on the left Click "Empty Project" under Additional options. Click Finish Step 2: Add files to your project Right click on your project in the Solution Explorer Add->New Item Click Code in the Categories List Select either C++ File or Header File as appropriate to the task Type the name of the file in the edit box near the bottom. Click Add Building your executable For solutions which only have a single project, Build Solution will do the same as "Build <projName>". Once you have solutions which are containers for multiple projects, you will need to choose either to build individual projects, or the whole solution. I believe all of the tasks we will attempt in this workshop will require only a single project. As such, "Build Solution" should work just fine. Week 1 Errata Chapter 1, Exercise 1 says "...try to guess what it does without running it." If you DO put it into a compiler it will give you a compile error as the listing is not correct. The author meant: #include <iostream> int main() { int x = 5; int y = 7; std::cout << std::endl; std::cout << x + y << " " << x * y; std::cout << std::endl; return 0; } Note that 'endl' is also part of the Standard Namespace, and thus requires std:: at the beginning. [Edited by - jwalsh on May 30, 2007 5:25:07 PM]

CPP Workshop Workshops

Started by JWalsh June 01, 2006 11:40 AM

182 comments, last by Dbproguy 16 years, 9 months ago

londonman

100

June 25, 2006 05:02 PM

first of all im useing dev c++

and i get a problem or bug see if im doing this right

#include <iostream.h>

int main();
{
count <<"hello world!\n";
return 0;
}
it says source file not there

londonman

100

June 25, 2006 05:25 PM

i found out the problem

but now i have a different problem i press compile and run and the camand promt screen flashs it does not show me any thing

Sr_Guapo

876

June 25, 2006 07:52 PM

Quote:
Original post by londonman
i found out the problem

but now i have a different problem i press compile and run and the camand promt screen flashs it does not show me any thing

Well, the program you showed has at least 4 errors from what I see. It should be:

#include <iostream>int main(){    std::cout << "Hello World\n";    return 0;}

The problem with the command prompt dissapearing is common. Since it is a console application, it is meant to be run from the console. If you do this, it will run perfectly. However, since you are executing it from the IDE, the window dissapears as soon as the program finishes. In Visual Studio, you can choose to "Start without debugging" which will ensure the window stays up at completion. I have no experince with Dev-C++ if their is something similar.

Sean Henley [C++ Tutor]Rensselaer Polytechnic Institute

londonman

100

June 25, 2006 08:22 PM

it had 2 errors and i found them out already

but i have a diferent problem how do i run the program
useing dev
i dount get any of this part
The steps to create an executable file are
1. Create a source code file, with a .CPP extension.

2. Compile the source code into a file with the .OBJ extension.

3. Link your OBJ file with any needed libraries to produce an executable program.
i get creat a source file
plz help

Sr_Guapo

876

June 25, 2006 08:54 PM

Quote:
Original post by londonman
it had 2 errors and i found them out already

but i have a diferent problem how do i run the program
useing dev
i dount get any of this part
The steps to create an executable file are
1. Create a source code file, with a .CPP extension.

2. Compile the source code into a file with the .OBJ extension.

3. Link your OBJ file with any needed libraries to produce an executable program.
i get creat a source file
plz help

Did you follow the advice in this post? Again, I haven't used Dev-C++, but those instructions seem complete.

Edit: My link does not appear to work, just look at the second post in this thread.

Sean Henley [C++ Tutor]Rensselaer Polytechnic Institute

londonman

100

June 25, 2006 10:07 PM

#include <iostream.h>
int main()
{
int x = 5;
int y = 7;
cout "\n";
cout << x + y<< ""<< x * y;
cout "\n";
return 0;
}
it says ther two errors in this i cant see them i been loking at it for 30 mins

Sr_Guapo

876

June 26, 2006 12:20 AM

Quote:
Original post by londonman
#include <iostream.h>
int main()
{
int x = 5;
int y = 7;
cout "\n";
cout << x + y<< ""<< x * y;
cout "\n";
return 0;
}
it says ther two errors in this i cant see them i been loking at it for 30 mins

I see several problems. First of all, you are using the old deprecated header "iostream.h". Cahnge it to "iostream" (no ".h"). Then, the errors you are getting are due to the fact that you are not using "<<" opertaor when you try to send the new lines. Finally, you are not correctly specifying that cout resides in the std namespace. You must either prefix all of your cout calls with "std::"
or specify to include the namespace (using std::cout).

The correct code would be:

#include <iostream>int main(){    int x = 5;    int y = 7;    std::cout << "\n";    std::cout << x + y << " " << x * y;     std::cout << "\n";    return 0;}

I recommend reading through this thread, as many of the errors are discussed and more in depth explainations are given.

Sean Henley [C++ Tutor]Rensselaer Polytechnic Institute

londonman

100

June 26, 2006 07:05 PM

i wonder y it did not have that program in the book i tryed coping every thing in the book and i got those errors but thx for helping me it worke
it would be cool too see it to rather then it flashing on the screen and disaperring if any body have a solutin tell us

im useing dev

Sr_Guapo

876

June 28, 2006 05:55 PM

Quote:
Original post by londonman
i wonder y it did not have that program in the book i tryed coping every thing in the book and i got those errors but thx for helping me it worke
it would be cool too see it to rather then it flashing on the screen and disaperring if any body have a solutin tell us

im useing dev

The supported develepoment environment is Visual Studio Express. I told you how to set it up with that. This is a very common problem and should have multiple answers in this thread and found on google.

Of course, You can easily run the program from the command line and it will run correctly and not disappear.

Edit: According to this page, it should work fine by hitting "Run".

Quote:

7. To compile (but not also link) the source program, use Compile option of the Execute menu (or click the Compile tool, pictured as ). The "Building-resource-file/Linking-files/Compilation-complete" window appears (the title changes with the phase of compilation). If there are errors, then they are listed in the bottom pane of the window. Clicking the Continue button (i.e., ) will hide the "Compilation‑complete" window. Double-clicking on a specific error message will cause the highlighting of the offending statement of the source program. The offending statement can then be modified.

8. Assuming there are no compiler or linking errors, use the Run option of the Execute menu (or click on the Run Project tool ). A Command-Prompt window will appear and begin executing the compiled program. The last item displayed in this window will be "Press any key to continue . . ."; pressing a key like ENTER or the space bar, causes the execution window to disappear and Dev-C++ environment to reappear.

Sean Henley [C++ Tutor]Rensselaer Polytechnic Institute

Myotis

122

June 30, 2006 10:06 PM

When working on a big project, how will the final product be structured ? Will it be all in a single .ccp file like, a 100 meg text file ? Or can you create multiple programs, compile them in .obj and then link them all together ?

Thanks.

C++ Workshop - Getting Started with C++ (Ch. 1 & 2)

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C++ Workshop - Getting Started with C++ (Ch. 1 & 2)

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