From c9b6b9a5ca082fe7c1b6f58d7713f785a9eb6a5c Mon Sep 17 00:00:00 2001
From: Martial Simon <msimon_fr@hotmail.com>
Date: Mon, 15 Sep 2025 01:08:27 +0200
Subject: add: graphs et rushs

---
 rushs/tinyprintf/ascii_carousel/rot_x.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 rushs/tinyprintf/ascii_carousel/rot_x.c

(limited to 'rushs/tinyprintf/ascii_carousel/rot_x.c')

diff --git a/rushs/tinyprintf/ascii_carousel/rot_x.c b/rushs/tinyprintf/ascii_carousel/rot_x.c
new file mode 100644
index 0000000..667106d
--- /dev/null
+++ b/rushs/tinyprintf/ascii_carousel/rot_x.c
@@ -0,0 +1,26 @@
+#include <stddef.h>
+
+void rot_x(char *s, int x)
+{
+    if (s == NULL)
+    {
+        return;
+    }
+
+    if (x < 0)
+    {
+        x = 26 + x;
+    }
+
+    for (size_t i = 0; s[i]; i++)
+    {
+        if (s[i] >= 'a' && s[i] <= 'z')
+        {
+            s[i] = ((s[i] - 'a') + x) % 26 + 'a';
+        }
+        else if (s[i] >= 'A' && s[i] <= 'Z')
+        {
+            s[i] = ((s[i] - 'A') + x) % 26 + 'A';
+        }
+    }
+}
-- 
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