Differences between heap and stack

Source: Internet
Author: User

Personal summary:

1 location is different: Stack and stack are in different locations in the memory, stack is in high address, stack is in low address

2. different purposes: Stack is applied by the system, and stack is applied by programmers.

3. Different recycling methods: the stack is released by the system itself, and must be manually released by the programmer before the program ends.

4. Different Sizes: the stack usually has a relatively small capacity and the heap memory capacity is relatively large.


Attached memory distribution knowledge:

The memory occupied by a c/C ++ compiled program is divided into the following parts:
1. stack: the stack zone is automatically allocated and released by the compiler, and stores function parameter values and local variable values. The operation method is similar to the stack in the data structure.
2. heap-generally assigned and released by the programmer. If the programmer does not release the heap, it may be recycled by the OS at the end of the program. Note that it is different from the heap in the data structure. The allocation method is similar to the linked list.
3. Global (static)-the storage of global variables and static variables is put together, and the initialized global variables and static variables are in one area, uninitialized global variables and uninitialized static variables are in another adjacent area. -The system is released after the program ends.
4. Text Constant Area-constant strings are placed here. The program is released by the System
5. program code area-stores the binary code of the function body

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.