Solved

Does function created in C take some of memory?

Posted on 1998-09-06
3
185 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
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

Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Need 'Configuration File' Management Library for C++ Project 1 495
C++ get user from AD  (VS6) 7 73
Dialogbox API leak? 18 94
Beginner to Unreal Engine 4 5 79
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…
  Included as part of the C++ Standard Template Library (STL) is a collection of generic containers. Each of these containers serves a different purpose and has different pros and cons. It is often difficult to decide which container to use and …
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.
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.

776 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