diff --git a/c_pointers/chapter_5.c b/c_pointers/chapter_5.c
new file mode 100644
index 0000000..c3adceb
--- /dev/null
+++ b/c_pointers/chapter_5.c
@@ -0,0 +1,26 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+
+int main(void) {
+
+    // print size of char & character literal
+    printf("%zu\n", sizeof(char));
+    printf("%zu\n", sizeof('a'));
+
+
+
+    // when a string is not a constant
+    // doesn't work with gcc anymore, also with -Wno-deprecated-writable-strings
+    // gives 'Bus error: 10'
+    {
+        char *tabHeader = "Sound";
+        *tabHeader = 'L';
+        printf("%s\n", tabHeader);
+    }
+
+
+    return 0;
+
+}
\ No newline at end of file