Solved

Does function created in C take some of memory?

Posted on 1998-09-06
3
188 Views
Last Modified: 2010-04-10
Hello experts,

As I am novice to C, so I would like to ask if a recursive function created in MSVC++ occupy some of the memory spaces. If yes, how woul I clear out this function after I have use it.
By the way, does recursive function able to cause the exhaustive memory in computer..?

Thank You for the help...
0
Comment
Question by:dekoay
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 3

Accepted Solution

by:
LucHoltkamp earned 30 total points
ID: 1172113
In fact it does..
When the function is executed it's returnadress is saved on stack, also room for it's parameters is reserved on stack.
Because the stack is normally not as large as main memory (1 MB in win95) a stack overflow is possible, if your recursive function calls itself many times (10 of thousends in win95, but it depends on the size of your parameters).
Notice that under DOS (16 bits) the stack size is normally not larger then 64 k. So a stackoverflow is much more likely.
luc.
0
 
LVL 1

Expert Comment

by:newexpert
ID: 1172114
Any code will take up memory spaces.  Code memory is managed by the operating system therefore you don't need to worry about it.

Any function will use stack and/or heap for working.  Stack is automatically cleaned up by the function after exiting, dynamic heap needs to be freed by you (just use delete operator on anything that was created by new operator).

If you have a run-away recursive function the memory (probably on the stack) will quickly run out.  In some circumstances you get a segment violation. You can also get a stack-heap collision, and corrupt heap data, if stack and heap shares the same memory segment.
0
 

Author Comment

by:dekoay
ID: 1172115
Is there a way I can delete certain functions from the stack so there I can reuse the free space.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Suggested Solutions

Often, when implementing a feature, you won't know how certain events should be handled at the point where they occur and you'd rather defer to the user of your function or class. For example, a XML parser will extract a tag from the source code, wh…
Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
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 be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

739 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