diff --git a/ChangeLog b/ChangeLog
index 5ff6705..c92528c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2024-11-01  Mert Gör  <mertgor@masscollabs.xyz>
+
+	* c-basic/file_scope.c (foo): file scope example
+
 2024-10-30  Mert Gör  <mertgor@masscollabs.xyz>
 
 	* c-basic/C.pdf: Global variable scope page 26
diff --git a/c-basic/file_scope.c b/c-basic/file_scope.c
new file mode 100644
index 0000000..6947037
--- /dev/null
+++ b/c-basic/file_scope.c
@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+int a;
+
+void foo()
+{
+  a = 10;
+}
+
+int main ()
+{
+  a = 20;
+  printf("%d\n", a); // a = 20;
+  foo();
+  printf("%d\n", a); // a = 10
+
+  return 0;
+}