Photo Recovery and Memory using C

Homework from Harvard's Introduction to Computer Science CS50 hosted on eDX

🎓 Problem Set 4

• Recover: Recover deleted JPEGs from a memory card.
• I wrote the code in recover.c. The other files were provided by the instructor.

💡Lessons Learned

• Using malloc and command-line argument $ valgrind to prevent leaking memory and segmentation faults
• Implementing knowledge of JPEGs “signatures”: 0xff 0xd8 0xff
• Reading and writing files into memory using fread and fwrite
• Using buffers of BLOCK SIZE

🚀 Getting Started

To run this project locally:

• In your terminal, navigate to this folder's root directory and run the following commands

$ clang -o recover recover.c
$ ./recover card.raw

The expected result for the above execution is the recovery of 50 JPEGs, numbered 000.jpg to 050.jpg, that will be populated in this folder's root directory.