21点游戏编程.docx
《21点游戏编程.docx》由会员分享，可在线阅读，更多相关《21点游戏编程.docx（8页珍藏版）》请在冰豆网上搜索。
21点游戏编程
/*Filename:
ThisprogramplaysagameofBlackjackwithyou.Thecomputeristhedealerandyouarethevictim-er,Imeanplayer.Thedealergetsacardthatyoucansee.Thedealerthenasksifyouwantanothercardbyasking“Hit”or“Stand.”Ifyouchoosetohit,thedealergivesyouanothercard.Ifyouchoosetostand,thedealerdrawsorstands,andthegameisplayedoutaccordingtothecardsyouandthedealerhave.AswithrealBlackjack,thedealerstandson17.Thewinnerisannouncedonlyafterboththeplayer’sandthedealer’shandsarefinished.*/
/******************************************************
ANSICstandardheaderfilesappearnext*/
#include<>
#include<>
#include<>
#include<>
/******************************************************
Definedconstantsappearnext*/
#defineBELL‘\a’
#defineDEALER0
#definePLAYER1
/*Mustkeeptwosetsoftotalsfordealerandforplayer.ThefirstsetcountsAcesas1andthesecondcountsAcesas“realworld”Blackjack,thisprogramdoesn’tallowsomeAcestobe1whileothersAcesare11inthesamehand.*/
#defineACELOW0
#defineACEHIGH1
/*Onlyoneglobalvariableisusedinthisentireprogram.Thevariableholds0,whichmeansfalseinitially.OncetheuserentershisorhernameininitCardsScreen（）,thisvariableissetto1（fortrue）,sothenameisneveraskedforagaintherestoftheprogram.*/
/******************************************************
Thisprogram’sspecificprototypes*/
voiddispTitle（void）;
voidinitCardsScreen（intcards[52],intplayerPoints[2],
intdealerPoints[2],inttotal[2],
int*numCards）;
intdealCard（int*numCards,intcards[52]）;
voiddispCard（intcardDrawn,intpoints[2]）;
voidtotalIt（intpoints[2],inttotal[2],intwho）;
voiddealerGetsCard（int*numCards,intcards[52],
intdealerPoints[2]）;
chargetans（charmesg[]）;
voidfindWinner（inttotal[2]）;
/******************************************************
C’sprogramexecutionalwaysbeginsatmain（）here*/
Main（）
{
intnumCards;/*Equals52atbeginningofeachgame*/
intcards[52],playerPoints[2],dealerPoints[2],total[2];
charans;/*Foruser’sHit/StandorYes/Noresponse*/
do{initCardsScreen（cards,playerPoints,dealerPoints,total,&numCards）;
dealerGetsCard（&numCards,cards,dealerPoints）;
printf（“\n”）;/*Printsablankline*/
playerGetsCard（&numCards,cards,playerPoints）;
playerGetsCard（&numCards,cards,playerPoints）;
do{
ans=getAns（“Hitorstand（H/S）?
”）;
if（ans==‘H’）
{playerGetsCard（&numCards,cards,
playerPoints）;
}
}while（ans!
=‘S’）
totalIt（playerPoints,total,PLAYER）;
/*Player’stotal*/
Do{
dealerGetsCard（&numCards,cards,dealerPoints）;
}while（dealerPoints[ACEHIGH]<17）;
/*17:
Dealerstops*/
totalIt（dealerPoints,total,DEALER）;
/*第296页*/
/*Dealer’stotal*/
findWinner（total）;
ans=getAns（“\nPlayagain（Y/N）?
“）;
}while（ans==’Y’）;
retutn;
}
/******************************************************
Thisfunctioninitializesthefacevaluesofthedeckofcardsbyputtingfoursetsof1-13inthe52-cardclearsthescreenanddisplaysatitle.*/
voidinitCardsScreen（intcards[52],intplayerPoints[2],intdealerPoints[2],inttotal[2],int*numCards）
{
intsub,val=1;/*Thisfunction’sWorkvariables*/
charfirstName[15];/*Holdsuser’sfirstname*/
*numCards=52;/*holdsrunningtotalofnumberofcards*/
For（sub=0;sub<=51;sub++）{/*Countsfrom0to51*/
val=（val==14）?
1:
val;/*Ifvalis14,resetto1*/
cards[sub]=val;
val++;}
for（sub=0;sub<=1;sub++）/*Countsfrom0to1*/
{playerPoints[sub]=dealerPoints[sub]=total[sub]=0;}
dispTitle（）;
if（askedForName==0）/*Nameaskedforonlyonce*/
{printf（“/nWhatisyourfirstname?
“）;
scanf（“%s”,firstName）;
askedForName=1;/*Don’taskpromptagain*/
printf（“Ok,%s,getreadyforcasinoaction!
\n\n”,firstname）;
getchar（）;/*Discardsnewline.Youcansafely*/
}/*ignorecompilerwarninghere.*/
Return;
}
/******************************************************
Thisfunctiongetsacardfortheplayerandupdatestheplayer’spoints.*/
voidplayerGetsCard（int*numCards,intcards[52],intplayerPoints[2]）
{
intnewCard;
newCard=dealCard（numCards,cards）;
printf（“Youdraw:
“）;
dispCard（newCard,playerPoints）;
}
/******************************************************
Thisfunctiongetsacardforthedealerandupdatesthedealer’spoints.*/
/*第297页*/
voiddealerGetsCard（int*numCards,intcards[52],intdealerPoints[2]）
{
intnewCard;
newCard=dealCard（numCards,cards）;
printf（“Thedealerdraws:
“）;
dispCard（newCard,dealerPoints）;
}
/******************************************************
Thisfunctiongetsacardfromthedeskandstoresitineitherthedealer’sortheplayer’sholdofcard.*/
intdealCard（int*numCards,intcards[52]）
{
intcardDrawn,subDraw;
time_tt;/*Getstimeforarandomvalue*/
srand（time（&t））;/*Seedsrandom-numbergenerator*/
subDraw=（rand（）%（*numCards））;/*From0tonumcards*/
cardDrawn=cards[subDraw];
cards[subDraw]=cards[*numCards-1];/*Putstopcard*/
（*numCards）-;/*inplaceofdrawnone*/
returncardDrawn;
}
/******************************************************
Displaysthelast-drawncardandupdatespointswithit.*/
voiddispCard（intcardDrawn,intpoints[2]）
{
switch（cardDrawn）{
case（11）:
printf（“%s\n”,“Jack”）;
points[ACELOW]+=10;
points[ACEHIGH]+=10;
break;
case（12）:
printf（“%s\n”,“Queen”）;
points[ACELOW]+=10;
points[ACEHIGH]+=10;
break;
case（13）:
printf（“%s\n”,“King”）;
points[ACELOW]+=10;
points[ACEHIGH]+=10;
break;
default:
points[ACELOW]+=cardDrawn;
if（cardDrawn==1）
{printf（“%s\n”,“Ace”）;
points[ACEHIGH]+=11;
}
else
{points[ACEHIGH]+=cardDrawn;
printf（“%d\n”,cardDrawn）;}
}
return;
}
/*第298页*/
/******************************************************
FiguresthetotalforplayerordealertoseewhofunctiontakesintoaccountthefactthatAceiseither1or11.*/
voidtotalIt（intpoints[2],inttotal[2],intwho）
{
/*ThefollowingroutinefirstlookstoseeifthetotalpointscountingAcesas1isequaltothetotalpointscountingAcesas11.Ifso,orifthetotalpointscountingAcesas11ismorethan21,theprogramusesthetotalwithAcesas1only.*/
if（（points[ACELOW]==points[ACEHIGH]）&&
（points[ACEHIGH]>21））
{total[who]=points[ACELOW];}/*KeepsallAcesas1*/
else
{total[who]=points[ACEHIGH];}/*KeepsallAcesas11*/
if（who==PLAYER）/*Determinesthemessageprinted*/
{printf（“Youhaveatotalof%d\n\n”,total[PLAYER]）;}
else
{printf（“Thehousestandswithatotalof%d\n\n”,total[DEALER]）;}
return;
}
/******************************************************
Printsthewinningplayer.*/
voidfindWinner（inttotal[2]）
{
if（total[DEALER]==21）
{printf（“Thehousewins.\n”）;
return;}
if（（total[DEALER]>21）&&（total[PLAYER]>21））
{printf（“%s”,“Nobodywins.\n”）;
return;}
if（（total[DEALER]>=total[PLAYER]）&&（total[DEALER]<21））
{printf（“Thehousewins.\n”）;
return;}
if（（total[PLAYER]>21）&&（total[DEALER]<21））
{printf（“Thehousewins.\n”）;
return;}
printf（“%s%c”,“Youwin!
\n”,BELL）;
return;
}
/******************************************************
Getstheuse’suppercase,single-characterresponse.*/
chargetAns（charmesg[]）
{
charans;
printf（“%s”,mesg）;/*Printsthepromptmessagepassed*/
ans=getchar（）;
getchar（）;/*Discardsnewline.Youcansafely*/
/*ignorecompilerwarninghere.*/
returntoupper（ans）;
}
/******************************************************
Clearseverythingoffthescreen.*/
voiddispTitle（void）
{
inti=0;
while（i<25）/*Clearsscreenbyprinting25blank*/
{printf（“\n”）;/*linesto“pushoff”stuffthat*/
i++;}/*mightbeleftoveronthescreen*/
/*beforethisprogram*/
printf（“\n\n*SteprightuptotheBlackjacktables*\n\n”）;
return;
}
（完）
升级会员 