diff --git a/a.out b/a.out
deleted file mode 100755
index 1290597..0000000
Binary files a/a.out and /dev/null differ
diff --git a/isbn b/isbn
deleted file mode 100755
index b0eda9d..0000000
Binary files a/isbn and /dev/null differ
diff --git a/test.c b/test.c
deleted file mode 100644
index f70a520..0000000
--- a/test.c
+++ /dev/null
@@ -1,14 +0,0 @@
-#include <string.h>
-#include <stdio.h>
-
-int main(void)
-{
-	char* x = "Hello, ";
-	char* y = "world!";
-
-	size_t out_len = strlen(x) + strlen(y) + 1;
-	char out[out_len];
-	snprintf(out, out_len, "%s%s", x, y);
-	puts(out);
-	return 0;
-}