commit 850c3bbb9f713d98a62ff64d0424bf6624a34596
Author: wandoubaba <wandoubaba517@gmail.com>
Date:   Sat Dec 2 17:53:22 2023 +0800

    chapter 01

diff --git a/c01_enlighten/concrete.c b/c01_enlighten/concrete.c
new file mode 100644
index 0000000..8c64a00
--- /dev/null
+++ b/c01_enlighten/concrete.c
@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+int main(void)
+{
+    printf("Concrete contains gravel and cement.\n");
+    printf("混凝土含有砾石和水泥。\n");
+    printf("A .c is used to end a C program filename.\n");
+    return 0;
+}
\ No newline at end of file