CS50 2019 - Lecture 4 - Memory

TABLE OF CONTENTS 00:00:00 - Introduction 00:01:22 - Hexadecimal 00:09:15 - address.c 00:15:18 - Pointers 00:19:38 - Memory Representation 00:24:03 - Strings Don't Exist 00:28:51 - char * 00:32:44 - addresses.c (continued) 00:36:56 - Pointer Arithmetic 00:40:42 - compare.c 00:47:44 - copy.c 00:58:44 - malloc and free 01:03:35 - Buffer Overflow (memory.c) 01:06:18 - Valgrind (memory.c) 01:08:35 - Swap (Demonstration) 01:11:11 - noswap.c 01:20:28 - swap.c 01:26:01 - Stack, Heap, and Buffer Overflows 01:27:42 - scanf.c 01:35:09 - phonebook.c 01:39:38 - jpeg.c 01:44:26 - file I/O 01:45:09 - Enhance 01:47:05 - Week 4 Preview TOPICS * Pointers * Segmentation Faults * Dynamic Memory Allocation * Stack * Heap * Buffer Overflow * Data Structures * File I/O * Images *** This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming. Demanding, but definitely doable. Social, but educational. A focused topic, but broadly applicable skills. CS50 is the quintessential Harvard course. FALL 2019 https://www.youtube.com/playlist?list=PLhQjrBD2T381L3iZyDTxRwOBuUt6m1FnW *** HOW TO SUBSCRIBE http://www.youtube.com/subscription_center?add_user=cs50tv HOW TO TAKE CS50 edX: https://cs50.edx.org/ Harvard Extension School: https://cs50.harvard.edu/extension Harvard Summer School: https://cs50.harvard.edu/summer OpenCourseWare: https://cs50.harvard.edu/x HOW TO JOIN CS50 COMMUNITIES Discord: https://discord.gg/T8QZqRx Ed: https://cs50.harvard.edu/x/ed Facebook Group: https://www.facebook.com/groups/cs50/ Faceboook Page: https://www.facebook.com/cs50/ GitHub: https://github.com/cs50 Gitter: https://gitter.im/cs50/x Instagram: https://instagram.com/cs50 LinkedIn Group: https://www.linkedin.com/groups/7437240/ LinkedIn Page: https://www.linkedin.com/school/cs50/ Quora: https://www.quora.com/topic/CS50 Slack: https://cs50.edx.org/slack Snapchat: https://www.snapchat.com/add/cs50 Twitter: https://twitter.com/cs50 YouTub