C++ Dynamic Arrays (Dynamically Allocated Array)

C++ Dynamically Allocated Array. More often referred to as a dynamic array, although this is incorrect since dynamic array refers to another concept, but we will discuss that in another video. In this video you will learn how to allocate an array on the heap. This is referred to as a dynamically allocated array, which defers from a statically allocated array on the stack. By creating an array on the heap, the array capacity does not need to be determined at compile time. For this reason, we can create an array that can have varying sizes.
If you need to review these topics:
Arrays: • Arrays in C++
Pointers: • Pointers in C++
Pointers to Arrays/ Pointer Arithmetic: • C++ Pointers and Arrays
Null Pointers: • C++ Null Pointers
Dynamic Memory Allocation: • Dynamic Memory Allocat...
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[@tomlam2885]

Thank you so much! Finally understand what is dynamic array🎉

[@MSaad-ek6js]

Summary or bullet points:
1) In C++, for stack we should use constant size for array while in heap allocation size can vary based on user input.
2) int lottery_tickets[size ] ; is same as int * lottery_tickets = new int[size];
3) lottery_tickets[i]; is same as *(lottery_ticktets + i )

[@yousefebid2765]

thank you bro

[@nehaltalapalli8959]

what if even the user doesn't know how many items they want to input? Like in the scenario of a shopping list where the user remembers stuff they need to buy as they write the list. Great video regardless, you have earned a like from me.

[@KennyYipCoding]

then you would use a vector!
a vector utilizes an array allocated on the heap already. See my next video (C++ Dynamic Arrays vs Dynamically Allocated Arrays) to learn how this actually works: th-cam.com/video/6luxAZrZbJc/w-d-xo.html

[@Viktor-mk4sl]

Great video, thanks for explaining it well. On a sidenote, what keyboard/switches do you have? They sound amazing

[@KennyYipCoding]

Thanks! The exact keyboard I'm using is:
Keychron K5 SE Wireless Mechanical Keyboard
White Backlight / Low Profile Gateron Mechanical / Brown

[@Viktor-mk4sl]

@@KennyYipCoding Thank you!

[@OmerElballa]

What keyboard do you have? It sounds amazing!!

[@KennyYipCoding]

Thanks! The exact keyboard I'm using is:
Keychron K5 SE Wireless Mechanical Keyboard
White Backlight / Low Profile Gateron Mechanical / Brown