Update pointer memory explaination images

slides/c_slides.md

@@ -256,10 +256,6 @@ double xfb(int a, int b, double pre); // 🤔
 
 ## Pointers
 
-![Memory 0](images/memory-0.png)
-
----
-
 ![Memory 1](images/memory-1.png)
 
 ---
@@ -280,6 +276,10 @@ double xfb(int a, int b, double pre); // 🤔
 
 ---
 
+![Memory 6](images/memory-6.png)
+
+---
+
 - Pointers are an essential language feature in C
 - Used for working with large *objects*
 - Underlying building block for arrays

slides/images/tikz_template.tex

+\documentclass{article}
+
+% font
+\usepackage[math]{iwona}
+\usepackage[no-math]{fontspec}
+	\setmainfont{Noto Serif}
+	\setsansfont{Noto Sans}
+	\setmonofont{Noto Mono}[Scale=0.8]
+	\renewcommand{\familydefault}{\sfdefault}
+
+% color
+\usepackage{xcolor}
+	\definecolor{uibkblue}{cmyk}{1.0, 0.6, 0.0, 0.56}
+
+% SI units
+\usepackage[binary-units,per-mode=symbol]{siunitx}
+	\sisetup{detect-all}
+
+% graphics
+\usepackage{tikz}
+	\usetikzlibrary{arrows.meta}
+	\usetikzlibrary{calc}
+	\usetikzlibrary{fit}
+	\usetikzlibrary{matrix}
+	\usetikzlibrary{positioning}
+
+% page
+\usepackage{ifthen}
+\usepackage[active,xetex,tightpage]{preview}
+	\PreviewEnvironment[]{pgfpicture}
+	\PreviewEnvironment[]{tikzpicture}
+
+\begin{document}
+<>
+\end{document}