adding 2

0x0B-more_malloc_free/2-calloc.c

@@ -0,0 +1,25 @@
+#include "holberton.h"
+
+/**
+ * _calloc - new calloc using malloc
+ * @nmemb: number of elements.
+ * @size: size of mem.
+ * Return: returns pointer, NULL on fail.
+ */
+void *_calloc(unsigned int nmemb, unsigned int size)
+{
+	char *temp;
+	unsigned int i;
+
+	if (nmemb == 0 || size == 0)
+		return (NULL);
+
+	temp = malloc(nmemb * size);
+	if (temp == NULL)
+		return (NULL);
+
+	for (i = 0; i < (nmemb * size); i++)
+		temp[i] = 0;
+
+	return (temp);
+}

0x0B-more_malloc_free/2-main.c

@@ -0,0 +1,49 @@
+#include "holberton.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * simple_print_buffer - prints buffer in hexa
+ * @buffer: the address of memory to print
+ * @size: the size of the memory to print
+ *
+ * Return: Nothing.
+ */
+void simple_print_buffer(char *buffer, unsigned int size)
+{
+    unsigned int i;
+
+    i = 0;
+    while (i < size)
+    {
+        if (i % 10)
+        {
+            printf(" ");
+        }
+        if (!(i % 10) && i)
+        {
+            printf("\n");
+        }
+        printf("0x%02x", buffer[i]);
+        i++;
+    }
+    printf("\n");
+}
+
+/**
+ * main - check the code for Holberton School students.
+ *
+ * Return: Always 0.
+ */
+int main(void)
+{
+    char *a;
+
+    a = _calloc(98, sizeof(char));
+    strcpy(a, "Holberton");
+    strcpy(a + 9, " School! :)\n");
+    a[97] = '!';
+    simple_print_buffer(a, 98);
+    return (0);
+}

0x0B-more_malloc_free/holberton.h

@@ -7,5 +7,6 @@
 void *malloc_checked(unsigned int b);
 int _putchar(char c);
 char *string_nconcat(char *s1, char *s2, unsigned int n);
+void *_calloc(unsigned int nmemb, unsigned int size);
 
 #endif