update alpha lowercase code

Author: medeng97

0x02-functions_nested_loops/1-alphabet.c

@@ -1,16 +1,19 @@
 #include "main.h"
+
 /**
- * print_alphabet - entry point
- * Description: print alphabet then new line.
- * Return: Always void.
+ * print_alphabet - Entry point
+ * Description: prints the alphabet lowecase then new line
+ * Return: void
  */
 void print_alphabet(void)
 {
-	char ch = 'a';
-	
-	while (ch <= 'z')
+	char letter = 'a';
+
+	while (letter <= 'z')
 	{
-		_putchar(ch);	
+		_putchar(letter);
+		letter++;
 	}
 	_putchar('\n');
 }
+

0x02-functions_nested_loops/_putchar.c

@@ -1,10 +1,13 @@
-#include <stdio.h>
-/* _putchar - entry point
- * Description: print char to cout
- * Return: 0 (Success)
+#include <unistd.h>
+
+/**
+ * _putchar - print the character ch to cout
+ * @ch: The character to print
+ *
+ * Return: 0 Success.
+ * On error, -1 is returned, and errno is set appropriately.
  */
-int _putchar(int ch)
+int _putchar(char ch)
 {
-	putchar(ch);
-	return (0);
+	return (write(1, &ch, 1));
 }

0x02-functions_nested_loops/main.h

@@ -1,2 +1,13 @@
 int _putchar(char ch);
 void print_alphabet(void);
+void print_alphabet_x10(void);
+int _islower(int c);
+int _isalpha(int c);
+int print_sign(int n);
+int _abs(int);
+int print_last_digit(int);
+void jack_bauer(void);
+void times_table(void);
+int add(int, int);
+void print_to_98(int n);
+void print_times_table(int n);