1 files changed, 47 insertions, 0 deletions
diff --git a/src/ft_printhex.c b/src/ft_printhex.c
new file mode 100644
index 0000000..e96b322
--- /dev/null
+++ b/src/ft_printhex.c
@@ -0,0 +1,47 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_printhex.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/13 15:50:35 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/13 16:00:38 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../ft_printf.h"
+
+static int get_len(unsigned int n)
+{
+    int len;
+
+    len = 0;
+    if (n == 0)
+        return 1;
+    while (n)
+    {
+        len++;
+        n /= 16;
+    }
+    return len;
+}
+
+static void printhex_rec(unsigned int nbr, char fmt)
+{
+    char c;
+
+    if (nbr % 16 < 10)
+        c = '0' + (nbr % 16);
+    else
+        c = fmt - 35 + (nbr % 16);
+    if (nbr > 15)
+        printhex_rec(nbr, fmt);
+    write(1, &c, 1);
+}
+
+int ft_printhex(unsigned int nbr, char fmt)
+{
+    printhex_rec(nbr, fmt);
+    return get_len(nbr);
+}