diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0fa99db
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.~lock.*.pptx#
diff --git a/presentation/Makefile b/presentation/Makefile
new file mode 100644
index 0000000..4808722
--- /dev/null
+++ b/presentation/Makefile
@@ -0,0 +1,10 @@
+SRC=example.c
+CC=gcc
+
+build: nopie pie
+
+nopie:
+	$(CC) -no-pie -o example.nopie example.c
+
+pie:
+	$(CC) -pie -o example.pie example.c
diff --git a/presentation/example.c b/presentation/example.c
new file mode 100644
index 0000000..8847371
--- /dev/null
+++ b/presentation/example.c
@@ -0,0 +1,11 @@
+#include<stdio.h>
+
+void some_function() {
+  puts("Hello, world!\n");
+}
+
+int main() {
+  void (*function)() = &some_function;
+  printf("some_function is located at %p\n", function);
+  return 0;
+}
diff --git a/presentation/example.nopie b/presentation/example.nopie
new file mode 100755
index 0000000..2acf05f
Binary files /dev/null and b/presentation/example.nopie differ
diff --git a/presentation/example.pie b/presentation/example.pie
new file mode 100755
index 0000000..00123e3
Binary files /dev/null and b/presentation/example.pie differ