diff --git a/ryuta.c b/ryuta.c
new file mode 100644
index 0000000000000000000000000000000000000000..73b0c4689fbda252b0767cfabdbdc6aa83530fe9
--- /dev/null
+++ b/ryuta.c
@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+int main(void) {
+    printf("hello, world!\n");
+}
\ No newline at end of file