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改寫猜價格游戲的程序(見下)，實現(xiàn)對這個游戲的一些管理功能，可以根據(jù)菜單對商品進行添加、刪除、查找、瀏覽等操作，根據(jù)模塊間數(shù)據(jù)傳遞的方式分析各個模塊的函數(shù)原型及調用關系，并完成程序編寫。商品價格要求在限定范圍內取隨機值。

如有興趣可以完成更多功能(不屬于作業(yè)要求內容)，如：

使用鏈表存儲商品(需要對鏈表進行操作的一些工具函數(shù))；

商品類型中加入商品個數(shù)信息，增加統(tǒng)計功能；

對用戶進行分類(如管理員看到的界面和普通用戶看到的界面應該是不同的)；

增加文件存儲功能等等。

#include?

#include?

#include?

#include?

#define?MAXNUMOFGOODS?5

#define?MAXNUMOFGUESS?6

struct?GOODSTYPE

{

char?name[20];

int?price;

int?lb;

int?ub;?};

void?Begin(?struct?GOODSTYPE?goods[],?int?size,?struct?GOODSTYPE*?pchoice?);

void?Play(?struct?GOODSTYPE*?pgoods?);

int?CheckNewGame();

void?ListGoods(?struct?GOODSTYPE?goods[],?int?size?);

struct?GOODSTYPE?Select(?struct?GOODSTYPE?goods[],?int?size?);

int?GuessPrice(?struct?GOODSTYPE*?pgoods?);

int?Judge(?struct?GOODSTYPE*?pgoods,?int?price?);

int?main()

{??struct?GOODSTYPE?goods[?MAXNUMOFGOODS?]?=?{?{?"Book",?61,?20,?120?},

{?"Radio",?177,?100,?300?},

{?"Electric?Cooker",?395,?200,?500?},

{?"Microwave?Oven",?988,?500,?1500?},

{?"Television",?2199,?1000,?3000?}?};

struct?GOODSTYPE?choice;????clrscr();

while(?1?)

{

Begin(?goods,?MAXNUMOFGOODS,?&choice?);

Play(?&choice?);

if(?!CheckNewGame()?)

{

printf(?"Thank?you!\nBye!\n"?);

break;

}

}

return?0;

}

void?Begin(?struct?GOODSTYPE?goods[],?int?size,?struct?GOODSTYPE*?pchoice?)

{

/*?列出全部商品?*/

ListGoods(?goods,?size?);

*pchoice?=?Select(?goods,?size?);

}

void?Play(?struct?GOODSTYPE*?pgoods?)

{

int?i,?price,?judge;

for(?i?=?0;?i?

{

price?=?GuessPrice(?pgoods?);

judge?=?Judge(?pgoods,?price?);

switch(?judge?)

{

case?-1:

printf(?"Low.?%d?opportunities?left.\n",?MAXNUMOFGUESS?-?i?-?1?);

break;

case??0:

printf(?"Congratulations!?You?win?the?%s!\n",?pgoods->name?);

break;

case??1:

printf(?"High.?%d?opportunities?left.\n",?MAXNUMOFGUESS?-?i?-?1?);

break;

}

if(?judge?==?0?)?break;

}

if(?price?!=?pgoods->price?)

printf(?"\n+++?You?lose!?+++\n+++?The?price?is?%d?+++\n",?pgoods->price?);

}

int?CheckNewGame()

{

static?char?replay[2]?=?"N";

printf(?"\nDo?you?want?to?play?another?game?(?Y?|?N?)??"?);

gets(?replay?);

if(?toupper(?replay[0]?)?==?'Y'?)

return?1;

else

return?0;

}

void?ListGoods(?struct?GOODSTYPE?goods[],?int?size?)

{

int?i;

printf(?"++++++++++++++++????????Welcome!?????????++++++++++++++\n\n"?);

printf(?"Choose?one?from?the?list.?You'll?get?it?if?you?can\n"?);

printf(?"tell?the?price?within?%d?times.\n\n",?MAXNUMOFGUESS?);

printf(?"++++++++++++++++++++++++++++++++++++++++++++++++++++\n"?);

for(?i?=?0;?i?

printf(?"%d.?%-20s(price?:?%d-%d)\n",?i?+?1,?goods[i].name,

goods[i].lb,?goods[i].ub?);

printf(?"++++++++++++++++++++++++++++++++++++++++++++++++++++\n\n"?);

}

struct?GOODSTYPE?Select(?struct?GOODSTYPE?goods[],?int?size?)

{

int?sel;

printf(?"Input?your?choice?(%d-%d),?Others?to?quit?the?game:?",

1,?size?);

scanf(?"%d",?&sel?);

if(?sel??size?)

exit(?0?);

return(?goods[?sel?-?1?]?);

}

int?GuessPrice(?struct?GOODSTYPE*?pgoods?)

{

int?price;

while(?1?)

{

printf(?"Input?your?price?between?%d?and?%d:?",

pgoods->lb,?pgoods->ub?);

scanf(?"%d",?&price?);

getchar();

if(?(?price?>=?pgoods->lb?)?&&?(?price?<=?pgoods->ub?)?)

break;

else

printf(?"Out?of?range,?please?input?a?price?between?%d?and?%d.\n",

pgoods->lb,?pgoods->ub?);

}

return?price;

}

int?Judge(?struct?GOODSTYPE*?pgoods,?int?price?)

{

if(?price?==?pgoods->price?)

return?0;

else?if(?price?price?)

return?-1;

else

return?1;

}

總結

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