Solved

Exit the function

Posted on 2003-11-13
7
290 Views
Last Modified: 2010-04-01
How to exit the function if it does not pass if statment? In delphi i always use Exit; function however, in C++ it does not work. Any ideas how should i do that? And example of such function:

void __fastcall TForm1::FormCreate(TObject *Sender)
{
  for (int i = 0; i < ParamCount(); i++)
  {
    if (LowerCase(ParamStr(i)) == "-options")
    {
      Panel1->Visible = True;
      exit(0); // it should exit the program here
    }
  }

// MORE CODE HERE

}
0
Comment
Question by:kabix
  • 4
  • 2
7 Comments
 
LVL 9

Accepted Solution

by:
tinchos earned 20 total points
ID: 9744372
Hi kabix,

In order to  exit the function you can do several things.......

1) if you use the exit() function, you will exit the program, not just the function.

void __fastcall TForm1::FormCreate(TObject *Sender)
{
  for (int i = 0; i < ParamCount(); i++)
  {
    if (LowerCase(ParamStr(i)) == "-options")
    {
      Panel1->Visible = True;
      exit(0); // it should exit the program here
    }
  }

// MORE CODE HERE

}

2) if you use the return; you will exit just the function
Note: I said that it is return; as the function is void.
I'm not sure if it is a standard convention, but in MSVC6 it is allowed to use return; in void functions

void __fastcall TForm1::FormCreate(TObject *Sender)
{
  for (int i = 0; i < ParamCount(); i++)
  {
    if (LowerCase(ParamStr(i)) == "-options")
    {
      Panel1->Visible = True;
      return; // it should exit the program here
    }
  }

// MORE CODE HERE

}

Hope this helps

Tincho
0
 
LVL 15

Expert Comment

by:efn
ID: 9744674
Just to supplement Tincho's comment:

Tincho> I'm not sure if it is a standard convention, but in MSVC6 it is allowed to use return; in void functions

It is standard and should work with any compiler.

"return" is the equivalent of the Delphi "Exit".  Both exit the current function, not the program.  If the function is declared to return a value, that value must be specified in a return statement.

--efn
0
 
LVL 9

Expert Comment

by:tinchos
ID: 9744690
Ok

thanks efn.......

Glad to see your comment.........
now I know for sure that it is standard, I thought so, but wasn't sure

:D

Tincho

0
Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

 
LVL 15

Expert Comment

by:efn
ID: 9744731
No problem, buddy!  You answered it, I just filled in a small gap.  And by the way, Tincho, thanks for your cleanup efforts.  I appreciate the opportunity to get credit for my dusty old forgotten comments, and I'm sure others do too.  kabix, my apologies for going off-topic.

--efn
0
 
LVL 9

Expert Comment

by:tinchos
ID: 9744746
No problem efn......

I saw a couple of yours in these last few days

:D
0
 
LVL 9

Expert Comment

by:tinchos
ID: 10249169
No comment has been added lately, so it's time to clean up this TA.
I will leave the following recommendation for this question in the Cleanup topic area:

Accept: tinchos {http:#9744372}

Please leave any comments here within the next seven days.
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!

Tinchos
EE Cleanup Volunteer
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: SunnyDark
This article's goal is to present you with an easy to use XML wrapper for C++ and also present some interesting techniques that you might use with MS C++. The reason I built this class is to ease the pain of using XML files with C++, since there is…
This article will show you some of the more useful Standard Template Library (STL) algorithms through the use of working examples.  You will learn about how these algorithms fit into the STL architecture, how they work with STL containers, and why t…
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question