Added another examples for Chapter 9

chp9/mallstats.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <malloc.h>
+#include <string.h>
+
+int main(void) {
+	/* Initialize string array */
+	char **names = (char **)calloc(5, sizeof(char *));
+	for (int i = 0; i < 5; i++) {
+		names[i] = (char *)malloc(sizeof(char *));
+	}
+	
+	memcpy(names[0], "Fabio", 5);
+	memcpy(names[1], "Chiara", 6);
+	memcpy(names[2], "Valerio", 7);
+	memcpy(names[3], "Luca", 4);
+	memcpy(names[4], "Leila", 5);
+
+	printf("\nBefore freed array...\n");
+	malloc_stats();
+	printf("\n");
+
+	for (int i = 0; i < 5; i++) {
+		printf("%s\n", names[i]);
+	}
+
+	for (int i = 0; i < 5; i++) {
+		free(names[i]);
+	}
+
+	printf("\nAfter freed array...\n");
+	malloc_stats();
+	printf("\n");
+
+	return 0;
+}