diff --git a/c-basic/hex_read_scanf.c b/c-basic/hex_read_scanf.c
index 7a41cdf..cc04ab5 100644
--- a/c-basic/hex_read_scanf.c
+++ b/c-basic/hex_read_scanf.c
@@ -1,4 +1,4 @@
-#include <stdio.h>
+#include "hex_read_scanf.h"
 
 int hex_scan()
 {
diff --git a/c-basic/hex_read_scanf.h b/c-basic/hex_read_scanf.h
new file mode 100644
index 0000000..b471eb7
--- /dev/null
+++ b/c-basic/hex_read_scanf.h
@@ -0,0 +1,9 @@
+// hexutil.h
+#ifndef HEXUTIL_H
+#define HEXUTIL_H
+
+// Prompts the user for a hexadecimal number and prints its decimal value.
+// Returns 0 upon successful execution.
+int hex_scan(void);
+
+#endif // HEXUTIL_H
diff --git a/c-basic/main.c b/c-basic/main.c
index 2f55127..e98061f 100644
--- a/c-basic/main.c
+++ b/c-basic/main.c
@@ -1,9 +1,9 @@
 #include <stdio.h>
-#include "scanf_example_two_numbers.h"
+#include "hex_read_scanf.h"
 
 int main() {
 
-  scan_two_numbers();
+  hex_scan();
     
     return 0;
 }