我一直在编写一个二十一点游戏，几乎完成了它的第一个开发阶段。我差不多完成了，唯一的问题是这部分产生的随机数：
if(x.hit == 1) {
if (x.userShowCardThree == 0) {
x.userShowCardThree = 1 + (rand()%11);
int dealerHit1 = x.userShowCardThree;
x.userTotal += dealerHit1;
x.cardCount++;
}
else {
if (x.userShowCardFour == 0) {
x.userShowCardFour = 1 + (rand()%11);
int dealerHit2 = x.userShowCardFour;
x.userTotal += dealerHit2;
x.cardCount++;
}
else {
if (x.userShowCardFive ==0) {
x.userShowCardFive = 1 + (rand()%11);
int dealerHit3 = x.userShowCardFive;
x.userTotal += dealerHit3;
x.cardCount++;
}
}
}
与最终部分中生成的数字不同：
cout << "You had a total of: " << x.userTotal << endl;
因为我不断得到不同的数字。我将在下面粘贴我的整个代码。
#include <iostream>
#include <ctime>
#include <cstdlib>
#include <cstring>
using namespace std;
void setRand() {
srand(time(0));
}
class Game {
public:
int userCards[11] = {1,2,3,4,5,6,7,8,9,10,11};
int dealerCards[11] = {1,2,3,4,5,6,7,8,9,10,11};
int userShowCardOne = userCards[1 + (rand()%11)];
int userShowCardTwo = userCards[1 + (rand()%11)];
int dealerShowCard = dealerCards[1 + (rand()%11)];
int dealerHiddenCard = dealerCards[1 + (rand()%11)];
int userShowCards[5] = {userShowCardOne, userShowCardTwo, userShowCardThree, userShowCardFour, userShowCardFive};
int userShowCardThree = 0;
int userShowCardFour = 0;
int userShowCardFive = 0;
int fresh = 1;
int beginningInput;
int hit = 1;
int dealerTotal = dealerShowCard + dealerHiddenCard;
int userTotal = userShowCardOne + userShowCardTwo;
int cardCount = 2;
int runGame = 1;
private:
};
// int a = 1 + rand()%11;
/*int b = 1 + rand()%11;
int c = 1 + rand()%11;
int d = 1 + rand()%11;
int e = 1 + rand()%11;
int f = 1 + rand()%11;
int g = 1 + rand()%11;
int h = 1 + rand()%11;
*/
int startGame();
int main() {
srand(time(0));
Game x;
cout << "Welcome to BlackJack 1.0.0" << endl;
cout << "Press: " <<endl;
cout << "1 ----- New Game" << endl;
cout << "2 ----- Help" << endl;
cin >> x.beginningInput;
if(x.beginningInput == 1){
startGame();
cout << "The dealer had: " << endl;
cout << x.dealerHiddenCard << endl;
cout << x.dealerShowCard << endl;
while(x.dealerTotal <= 16) {
cout << "The dealer has decided to hit" << endl;
int dealerHit = 1 + (rand()%11);
cout << "The dealer has gotten " << dealerHit << endl;
x.dealerTotal += dealerHit;
}
cout << "The dealer has decided to stay" << endl;
cout << "The dealer had a total of " << x.dealerTotal << endl;
cout << "You had a total of: " << x.userTotal << endl;
if (x.dealerTotal > 21 && x.userTotal <= 21) {
cout << "The dealer busted. You won!" << endl;
}
else if (x.userTotal > 21 && x.dealerTotal <= 21) {
cout << "You busted. The Dealer Won" << endl;
}
else if (x.userTotal > 21 && x.dealerTotal > 21) {
cout << "You and the dealer both busted. Tie" << endl;
}
else {
if (x.dealerTotal > x.userTotal) {
cout << "Sorry, you lost to the dealer" << endl;
}
else if (x.dealerTotal < x.userTotal) {
cout << "Congrats, you won!" << endl;
}
else {
cout << "You and the dealer tied. " << endl;
}
}
cout << "Would you like to play again? 1 to play again, 0 to quit" << endl;
cin >> x.beginningInput;
if (x.beginningInput == 1){
startGame();
}
else if (x.beginningInput == 0){
return 0;
}
}
else if (x.beginningInput == 0) {
cout << "Thanks for playing!" << endl;
}
else {
cout << "Here's the help section" << endl;
}
}
int startGame() {
Game x;
srand(time(0));
if (x.fresh != 1){
cout << "NEW GAME\n \n " << endl;
}
while (x.runGame == 1) {
cout << "Dealer: \n" << endl;
cout << "X" << endl;
cout << x.dealerShowCard << endl;
cout << "You: \n" << endl;
cout << x.userShowCardOne << endl;
cout << x.userShowCardTwo << endl;
x.userTotal = x.userShowCardOne + x.userShowCardTwo;
if (x.userShowCardThree != 0) {
cout << x.userShowCardThree << endl;
}
if (x.userShowCardFour != 0) {
cout << x.userShowCardFour << endl;
cout << "You can only hit one more time!" << endl;
}
if (x.userShowCardFive != 0) {
cout << x.userShowCardFive << endl;
}
if(x.cardCount > 5) {
cout << "sorry, there is a 5 card limit.";
}
cout << "Would you like to hit or stay? (1 for hit or 2 for stay)" << endl;
cin >> x.hit;
x.fresh = 2;
if(x.hit == 1) {
if (x.userShowCardThree == 0) {
x.userShowCardThree = 1 + (rand()%11);
int dealerHit1 = x.userShowCardThree;
x.userTotal += dealerHit1;
x.cardCount++;
}
else {
if (x.userShowCardFour == 0) {
x.userShowCardFour = 1 + (rand()%11);
int dealerHit2 = x.userShowCardFour;
x.userTotal += dealerHit2;
x.cardCount++;
}
else {
if (x.userShowCardFive ==0) {
x.userShowCardFive = 1 + (rand()%11);
int dealerHit3 = x.userShowCardFive;
x.userTotal += dealerHit3;
x.cardCount++;
}
}
}
}
if (x.hit == 2) {
x.runGame = 2;
}
}
return 0;
}
答案 0 :(得分：3)
看起来你有2个Game对象的实例，两个都被命名为x
int main() {
srand(time(0));
Game x;
...
cout << "You had a total of: " << x.userTotal << endl;
然后在startGame函数
int startGame() {
Game x;
...
if(x.hit == 1) {
if (x.userShowCardThree == 0) {
x.userShowCardThree = 1 + (rand()%11);
int dealerHit1 = x.userShowCardThree;
x.userTotal += dealerHit1;
x.cardCount++;
main（）中的x与startGame（）中的x不同，因为两者都是单独的Game对象。