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Practical C Programming

You're reading from   Practical C Programming Solutions for modern C developers to create efficient and well-structured programs

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Product type Paperback
Published in Feb 2020
Publisher Packt
ISBN-13 9781838641108
Length 616 pages
Edition 1st Edition
Languages
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Author (1):
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B. M. Harwani B. M. Harwani
Author Profile Icon B. M. Harwani
B. M. Harwani
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Table of Contents (20) Chapters Close

Preface 1. Working with Arrays 2. Managing Strings FREE CHAPTER 3. Exploring Functions 4. Preprocessing and Compilation 5. Deep Dive into Pointers 6. File Handling 7. Implementing Concurrency 8. Networking and Inter-Process Communication 9. Sorting and Searching 10. Working with Graphs 11. Advanced Data Structures and Algorithms 12. Creativity with Graphics 13. Using MySQL Database 14. General-Purpose Utilities 15. Improving the Performance of Your Code 16. Low-Level Programming 17. Embedded Software and IoT 18. Applying Security in Coding 19. Other Books You May Enjoy

Learning how to write secure code while copying strings

To avoid the buffer overflow that occurs when using the strcpy function, simply replace the strcpy function with the strncpy function. strncpy will copy only the specified number of bytes into the destination string, hence buffer overflows don't occur in this function. Let's see how it is done.

How to do it...

Here are the steps to make secure code while copying a string:

  1. Define a structure consisting of two members, name and orderid.
  2. Define a variable of the structure type defined in step 1.
  3. Assign any integer value to the orderid member of the structure.
  4. Determine the length of the name member of the structure to find the maximum number of characters...
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