--- src/money.4.c	2015-08-03 04:31:25.000000000 +0900
+++ src/money.5.c	2015-08-03 04:31:25.000000000 +0900
@@ -1,27 +1,38 @@
 #include <stdlib.h>
 #include "money.h"
 
 struct Money
 {
     int amount;
+    char *currency;
 };
 
 Money *money_create(int amount, char *currency)
 {
-    return NULL;
+    Money *m = malloc(sizeof(Money));
+
+    if (m == NULL)
+    {
+        return NULL;
+    }
+
+    m->amount = amount;
+    m->currency = currency;
+    return m;
 }
 
 int money_amount(Money * m)
 {
     return m->amount;
 }
 
 char *money_currency(Money * m)
 {
-    return NULL;
+    return m->currency;
 }
 
 void money_free(Money * m)
 {
+    free(m);
     return;
 }