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出现此错误：expected identifier or ‘(’ before ‘{’ token在 . 之后的第一个括号#include上int main。不知道为什么！为入门编程课程做作业。它今天到期，所以任何帮助将不胜感激！

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
{
int main(void);

int cardNum(int firstCard, int secondCard; 
int highLow;
int score;

score = 0;   
srand(time(NULL));

    printf("The current card is a %d\n" ,firstCard(2,14));
    printf("\n Will the next card be higher(1) or lower(2)? (press 0 to quit)");
    scanf("%d" ,highLow);
if cardNum > 1 && cardNum < 11
{        
     printf ("The card is: %d ,secondCard.");
}        
else if cardNum == 11
{
if highLow == 1, && secondCard > firstCard OR highLow == 2, && secondCard < firstCard
    {   
        score = score + 1; 
        printf ("\n You have guessed correctly.");
        printf ("\n Your current score is %d ,score!\n");
        printf("The current card is a ("%d" ,cardOne). \n Will the next card be           higher(1) or lower(2)? (press 0 to quit)");
    }    
else if highLow == 1, && secondCard < firstCard OR highLow == 2, && secondCard > firstCard  
    {
        score = score - 1;
        printf ("The card is: %d ,secondCard.");
        printf ("\n You have guessed incorrectly.");
        printf ("\n Your current score is %d ,score!\n");
        printf ("The current card is a %d ,cardOne."); 
        printf ("\n Will the next card be higher(1) or lower(2)? (press 0 to quit)");
    }
else if secondCard == firstCard
    {
        printf ("\n Matching cards, no change in score");
    }
else if highLow == 0
    {
        printf ("\n Thanks for playing! Your final score is %d, score.");
    }
else
    {
        printf ("\n Incorrect input. Please enter 0, 1 or 2")       
    }
}    
return(0);
}

我最初用 int main(void){ 就这样，但后来我得到了所有这些错误，所以我把它改成了分号，只得到了一个错误。
a3.c：在函数'main'中：a3.c:24:5：错误：预期的声明说明符或'score'之前的'...' a3.c:25:5：错误：预期的声明说明符或'.. .' 在 'srand' a3.c:27:5 之前：错误：预期的声明说明符或 '...' 在 'printf' a3.c:28:5 之前：错误：预期的声明说明符或 '...' 在 ' printf' a3.c:29:5：错误：预期的声明说明符或 '...' 在 'scanf' a3.c:31:5 之前：错误：预期的声明说明符或 '...' 在 'if' a3 之前。 c:82:1: 错误：在 '}' 标记 a3.c:82:1: 错误：预期的声明说明符或 '...' 在 '}' 标记 a3 之前.c:82:1：错误：输入 a3.c:82:1 结尾处的预期声明或语句：警告：控制到达非 void 函数的结尾 [-Wreturn-type]

4

2 回答 2

7 
{
int main(void);

应该

int main(void)
{

然后我让你修复程序的下一个编译错误......

于 2013-10-18T19:18:19.917 回答
4

您需要将开口大括号放在之后main，而不是之前

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

int main(void)
{
于 2013-10-18T19:18:50.333 回答