Arrays are Pointers | C++ For Java Devs Ep. 9

In this episode I talk about how pointers and arrays are similar. I begin by showing how everything in C++ is just a block of memory, arrays are blocks of memory, pointers are blocks of memory, and variables are blocks of memory. Then I show how you can use this knowledge to treat arrays as pointers and vice versa. Finally I show the danger of C++ by setting a separate variable unintentionally by accessing an out of bounds index in an array.

0:00 In This Episode
1:01 Note About Deleting
2:30 Arrays and Pointers (Drawing)
7:35 Stack vs Heap (Static Allocation)
8:50 Coding Dynamic Arrays
12:14 Vectors and Functions
16:44 Array Out of Bounds (No Error...)
17:18 Horrible No Good Bugs
19:57 Challenge! (And nullptr)

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Here are some books I recommend if you want to learn about game engine development more thoroughly. I do not profit off any of these sales, these are just some books that have helped me out :)

My Recommended Game Engine Books:

My Recommended Beginning Game Programming Books:

My Recommended Java Books:

[mrmaniac]

Gabe I cannot say this enough. If you like java, you will LOVE kotlin. It is the best language to ever grace God's green earth. Dedicate a week or two, to learning it and I promise you, you'll never be able to look at java the same it'll just be like an annoying little brother.

[elturco]

Es triste porque, creer que un array es lo mismo que un puntero es uno de los mayores errores de personas que llegan a C/C++, y esto fomenta aún mas la confusión. Son tipos distintos y mezclarlos sin cuidado puede causar errores difíciles de detectar, como obtener un tamaño inesperado al intentar hacer sizeof() a un array que "decayo" en un puntero luego de pasarlo a una función (por ej.), o intentar hacer aritmética con el (lo cual no está permitido). Pasar a una función que espera un (char*) un (&array) de hecho es pasar otro tipo totalmente distinto, en concreto ((array*)[N]), y un buen compilador te lo advertirá, lo correcto es pasar (&array[0]) o directamente (array). El operador (*) tampoco funciona con arrays. Por lo tanto, son muy distintos.

[mightycoderx]

Wait it's just me or you've missed an episode? Because the challenge at the beginning is not what you left us with in episode 8 it's completely different!

[sadmansakibkhan]

please please continue the game engine series

[buggybaka]

Bro you were the only good java youtuber but you turned to c++ 😭🥺, and you stopped replying my comments cause you are too famous too remember I guess