c++求钞票数求大佬帮忙

http://tieba.baidu.com/p/5421449120

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>
#include <string.h>

struct FaceType {
    int amount;
    int faceValue;
};

struct MoneyType {
    struct FaceType hundred;
    struct FaceType fifty;
    struct FaceType twenty;
    struct FaceType ten;
    struct FaceType five;
    struct FaceType one;
    //...
};

int Change(struct MoneyType * money, int sum);

struct MoneyType money = {
    /* 初始数量, 面值 */
    { 0, 100 },
    { 0, 50 },
    { 0, 20 },
    { 0, 10 },
    { 0, 5 },
    { 0, 1 },
};
int main(void)
{
    int sum = 0;
    int size = 0;
    int type = sizeof(MoneyType) / sizeof(FaceType);
    FaceType *face = NULL;

    while (1) {
        printf("请输入找零金额: ");
        scanf("%d", &sum);
        size = Change(&money, sum);
        if (size == 0) {
            printf("不需要找零\r\n\r\n");
            continue;
        }
        face = (FaceType *)&money;
        for (int i = 0; i < type; i++) {
            if (face->amount) {
                printf("%3d元 : %d\r\n", face->faceValue, face->amount);
            }
            face++;
        }
        printf("总张数: \r\n");
        printf("%d\r\n\r\n", size);
    }
    return 0;
}

int Change(MoneyType * money, int sum)
{
    FaceType *face = NULL;
    int size = 0;
    int type = sizeof(MoneyType) / sizeof(FaceType);

    if (sum == 0) {
        memset(money, 0, sizeof(MoneyType));
        return 0;
    }

    face = (FaceType *)money;
    for (int i = 0; i < type; i++) {
        if (sum == 0)
            break;
        face->amount = sum / face->faceValue;
        sum -= face->amount * face->faceValue;
        face++;
    }

    face = (FaceType *)money;
    for (int i = 0; i < type; i++) {
        size += face->amount;
        face++;
    }
    return size;
}

///////////////测试结果: /////////////////////////

请输入找零金额: 6666
100元 : 66
 50元 : 1
 10元 : 1
  5元 : 1
  1元 : 1
总张数:
70

请输入找零金额: 4567
100元 : 45
 50元 : 1
 10元 : 1
  5元 : 1
  1元 : 2
总张数:
50

请输入找零金额: