Question

此链接中存在此代码的问题 -
Why does it say 'expected declaration specifiers before 'main''

但那里的答案并不令人满意。而且有很多问题根本没有解决。

以下是一些编译器输出

|20|error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token  
|14|error: old-style parameter declarations in prototyped function definition  
|113|error: expected identifier or '(' before '{' token   
|139|error: expected '(' before '{' token  
|169|error: expected ':' or '...' before ';' token   
|276|error: redefinition of 'getFinalHand'   
|14|note: previous definition of 'getFinalHand' was here|

我真的不知道如何处理这些。

#include <stdio.h>
#include <time.h>
#include <ctype.h>
#include <stdlib.h>

#define FALSE 0
#define TRUE 1

void printGreeting();
int getBet();
char getSuit(int suit);
char getRank(int rank);
void getFirstHand(int cardRank[], int cardSuit[]);
void getFinalHand
(int cardRank[], int cardSuit[], int finalRank[], int finalSuit[], int 
ranksinHand[], int suitsinHand[])
int analyzeHand(int ranksinHand[], int suitsinHand[]);


main()
{
int bet;
int bank = 100;
int i;
int cardRank [5];
int cardSuit [5];
int finalRank[5];
int finalSuit[5];
int ranksinhand[13];
int suitsinhand[4];
int winnings;
time_t t;
char suit, rank, stillPlay;


printGreeting();


do{
bet = getBet();
srand(time(&t));
getFirstHand(cardRank, cardSuit);
printf("Your five cards: \n\n");
for (i = 0; i < 5; i++)
{
    suit = getSuit(cardsSuit[i]);
    rank = getRank(cardRank[i]);
    printf("Card #%d: %c%c\n\n", i+1, rank, suit);
}

for (i=0; i < 4; i++)
{
    suitsinHand[i] = 0;
}
for (i=0; i < 13; i++)
{
    ranksinHand[i] = 0;
}

getFinalHand(cardRank, cardSuit, finalRank, finalSuit, ranksinHand, 
suitsinHand);

printf("Your five final cards:\n\n");
for (i = 0; i < 5; i++)
{
    suit = getSuit(finalSuit[i]);
    rank = getRank(finalRank[i]);
    printf("Card #%d: %c%c\n\n", i+1, rank, suit);
}

winnings = analyzeHand(ranksinHand, suitsinHand);
printf("You won %d!\n\n", bet*winnings);
bank = bank - bet + (bet*winnings)
printf("\n\nYour bank is now %d.\n\n", bank);
printf("Want to play again? ");
scanf(" %c", &stillPlay);
}while (toupper(stillPlay) == 'Y');



 return;
 }

 /*************************************************************************/


 void printGreeting();
 {

 printf("**********************************************************\n\n");
 printf("\n\n\tWelcome to the Absolute Beginner's Casino\n\n");
 printf("\tHome of the Video Draw Poker");
 printf("**********************************************************\n\n");

 printf("Here are the rules\n");
 printf("You start with 100 credits, and you make a bet from");
 printf("1 to 5 credits.\n");
 printf("You are dealt 5 cards, and then you choose which ");
 printf("cards to keep");
 printf("or discard\n");
 printf("You want to make the best possible hand.\n");
 printf("\nHere is the table for winnings (assuming a ");
 printf("bet of 1 credit):");
 printf("\nPair \t\t\t\t1 credit");
printf("\nTwo pairs\t\t\t2 credits");
printf("\nThree of a kind\t\t\t3 credits");
printf("\nStraight \t\t\t4 credits");  
printf("Flush\t\t\t\t5 credits");
printf("Full House\t\t\t8 credits");
printf("Four of a Kind\t\t\t10 credits");
printf("Straight Flush\t\t\t20 credits");
printf("\n\nHave fun!!\n\n"); 
}


 void getFirstHand(int cardRank[], int cardSuit[]);
 {
int i,j;
int carDup;

for(i=0; i < 5; i++)
{
carDup = 0;
do{
    cardRank[i] = (rand() % 13);
    cardSuit[i] = (rand() % 4);

    for (j=0; j < i; j++)
    {
        if ((cardRank[i] == cardRank[j] &&
             cardSuit[i] == cardSuit[j]))
        {
            carDup = 1;
        }
    }
 }while (carDup == 1;);
 }
 }

 char getSuit(int suit)
 {
 switch
 {
case 0:
    return('C');
case 1:
    return('D');
case 2:
    return('H');
case 3:
    return('S');
}
}

char getRank(int rank)
{
switch (rank)
{
 case 0:
    return('A');
case 1:
    return('2');
case 2:
    return('3');
case 3:
    return('4');
case 4:
    return('5');
case 5:
    return('6');
case 6:
    return('7');
case 7;
    return('8');
case 8:
    return('9');
case 9:
    return('T');
case 10:
    return('J');
case 11:
    return('Q');
case 12:
    return('K');
}
}
int getBet()
{
int bet;
do
 {
printf("How much do you want to bet?(Enter a number");
printf("from 1 to 5, or 0 to quit the game): ");
scanf(" %d", &bet);

if (bet >= 1 && bet <= 5)
{
    return(bet);
}
else if (bet == 0)
{
    exit(1);
}
else
{
    printf("\n\nPlease enter a bet from 1-5 or ");
    printf("0 to quit the game\n\n");
}
}while ((bet < 0) || (bet > 5));
}

int analyzeHand(int ranksinHand[], int suitsinHand[])
{
 int num_consec = 0;
int i, rank, suit;
int straight = FALSE;
int flush = FALSE;
int four = FALSE;
int three = FALSE;
int pairs = 0;


for (suit = 0; suit < 4; suit++)
if (suitsinHand[suit] == 5)
    flush = TRUE;
rank = 0;
 while (ranksinHand[rank] == 0)
rank++;
for (; rank < 13 && ranksinHand[rank]; rank++)
num_consec++;
if(num_consec == 5) {
straight = TRUE;
}
for (rank = 0; rank < 13; rank++){
if (ranksinHand[rank] == 4)
    four == TRUE;
if (ranksinHand[rank] == 3)
    three == TRUE;
if (ranksinHand[rank] == 2)
    pairs++;
}
if (straight && flush){
printf("Straight Flush\n\n");
return(20);
}
 else if (four){
printf("Four of a kind\n\n");
return (10);
}
else if (three && pairs == 1){
printf("Full House\n\n");
return (8);
}
else if (flush){
 printf("Flush\n\n");
return (5);
}
else if (straight){
printf("Straight\n\n");
return (4);
}
else if (three){
printf("Three of a Kind\n\n");
return (3);
}
else if (pairs == 2){
printf("Two Pairs\n\n");
return (2);
}
else if (pairs == 1){
printf("Pair\n\n");
return (1);
}
else{
printf("High Card\n\n");
return (0);
}
 }

void getFinalHand
(int cardRank[], int cardSuit[], int finalRank[], int finalSuit[], int 
ranksinHand[], int suitsinHand[])
{
int i, j, carDup;
char suit, rank, ans;

for (i=0; i < 5; i++)
{
suit = getSuit(cardSuit[i]);
rank = getRank(cardRank[i]);
printf("Do you want to keep card #%d: %c%c", i+1, rank, suit);
printf("\nPlease answer (Y/N):");
scanf(" %c", &ans);
if (toupper(ans) == 'Y')
{
    finalRank[i] = cardRank[i];
    finalSuit[i] = cardSuit[i];
    ranksinHand[finalRank[i]]++;
    suitsinHand[finalSuit[i]]++;
    continue;
}
else if (toupper(ans) == 'N')
{
    carDup = 0;
    do{
        carDup = 0;
        finalRank[i] = (rand() % 13);
        finalSuit[i] = (rand() % 4);

        for (j=0; j < 5; j++)
        {
            if((finalRank[i] == finalRank[j]) && (finalSuit[i] == 
  finalSuit[j]))
            {
                carDup = 1;
            }
        }

        for (j=0; j < i; j++)
        {
            if((finalRank[i] == finalRank[j]) && (finalSuit[i] == 
finalSuit[j]))
            {
                carDup = 1;
            }
        }
    }while (carDup == 1);
    ranksinHand[finalRank[i]]++;
    suitsinHand[finalSuit[i]]++;
}

}
}

Answer 1

请将您的程序与HelloWorld或教程中的内容进行比较。通常main()（最简单的情况）的负责人应该是int main(void)。

作为旁注：
您需要将return语句添加到不返回void的任何内容，例如第153,188,213行，并注意你在第81行返回的内容您需要注意标识符的区分大小写，例如： 29,30号线。
您需要在第142行决定要切换的内容您需要在第240,242行中查看==和=之间的区别你似乎在第14,16,73,116,138,173行打击分号;的战争，请求和平。

我并不是说在修好这些东西之后程序会按预期工作，我不在乎试图解决这个问题。但如果你从某个地方复制，它可能会。但是，以这种方式复制代码不太可能教会你什么。

简而言之，您需要学习制作小型工作程序并在经过验证的小步骤中慢慢扩展它们我无法想象你是如何设法编写这样的代码，超过300行，没有中间步骤。我唯一可以想象的是你从某个地方复制了这个代码，手动输入。这似乎与那里的那种错误一致通过慢慢地向上学习一些教程，了解编译器警告的含义（至少使用gcc -Wall）。手动复制教程代码时，您可能会犯这样的一些错误，并且可以更容易地修复它们，一个接一个地修复它们。
我建议通过改变一些小东西来玩教程代码（在正确完成之后，做它应该做的事情）。例如。改变＆＃34; Hello world的输出。＆＃34; to＆＃34; Hi Praveen。＆＃34;，更改for (...;...;...)中的循环次数等等。以这种方式练习，学会预测代码的哪些编辑会导致哪些行为发生变化。

关于StackOverflow，你应该研究
的概念 https://stackoverflow.com/help/mcve
它对你自己非常有帮助，是一种很棒的调试技术在StackOverflow上提问也很有帮助。这个问题的例子与“＃Min;＆＃34;用main()的头部重现问题。

错误：在'{'令牌之前'预期'='，'，'，';'，'asm'或'attribute'

1 个答案:

错误：在'{'令牌之前'预期'='，'，'，';'，'asm'或'__attribute__'

1 个答案:

错误：在'{'令牌之前'预期'='，'，'，';'，'asm'或'attribute'