Question

我正在尝试使用Visual Studio 2012在C语言中进行猜字游戏，但我不断收到错误和警告，我不知道如何修复它们。我一直收到的错误是：

1.）警告1警告C4133：＆＃39;功能＆＃39; ：不兼容的类型 - 来自＆＃39; FILE *＆＃39;到＃char; char *＆＃39;

2.）警告2警告C4047：＆＃39; =＆＃39; ：＆＃39; FILE *＆＃39;间接层次与＆＃39; int（__ cdecl *）（FILE *）＆＃39;

3.）错误3错误C2449：找到＆＃39; {＆＃39;在文件范围（缺少函数头？）

4.）错误4错误C1004：发现意外的文件结尾

5.）智能感知：类型＆＃34; FILE *＆＃34;的参数与参数

不兼容

6.）IntelliSense：类型＆＃34; int（__ cdecl *）（FILE * _File）＆＃34;不能分配给＆＃34; FILE *＆＃34;类型的实体。

我也看到了错误，表示期待声明。＆＃39; 每当我尝试解决问题时，我最终都会在其他方面造成更多问题。有人可以帮我这个吗？谢谢！

这是我的代码：

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#define MAXGUESSES 5

int SingleGame(char file_letter);

int main()
{
    //declare additional variables
int PlayGames = 4,
i = 0;
FILE * infile;
char letter;
    //display instructions
    printf("Welcome to the Letter Guessing Game!\n");
    printf("You will enter the number of games that you want to play, which is 1-4 games\n");
    printf("You have 5 chances to guess each letter\n");
    printf("Let's begin!\n");

    //open file
    infile = fopen("lettersin.txt", "r");

    //get number of games to play
    printf("How many games would you like to play?(1-4)\n");
    scanf("%d", &PlayGames);

    for(i=0;i<PlayGames;i++)
    {
        //get a letter from file
        scanf(infile, " %c", &letter);

        //Play one game
        printf("Let's play a game %d\n", i);

        //check for win or lose
        SingleGame (letter);
    }

    //close file
    infile = fclose;
    return 0;
}
int SingleGame(char file_letter);
{

//Function definitions
    int numGuesses = 0;
    while(numGuesses < MAXGUESSES);
    char RetrieveGuess = 0;
    int PlayGames = 0;

    {
        printf("Enter a guess\n");
        scanf("%c" , &RetrieveGuess);
        if(file_letter == RetrieveGuess);
        {
            printf("You guessed it!\n");
        }
        else
        {
            if(file_letter>RetrieveGuess)
            {
                printf("The letter you are trying to guess comes before:%d\n",RetrieveGuess)
            }
            {
            else if(file_letter<RetrieveGuess)
            {
                printf("The letter you are trying to guess comes after:%d\n", RetrieveGuess)
            }


            {
            numGuesses = numGuesses +1;
            }

Answer 1

1.）警告1警告C4133：＆＃39;功能＆＃39; ：不兼容的类型 - 来自＆＃39; FILE *＆＃39; to＆＃39; const char *＆＃39;

scanf(infile, " %c", &letter);

如果您想阅读特定的FILE *，请使用fscanf()：

fscanf(infile, " %c", &letter);

2.）警告2警告C4047：＆＃39; =＆＃39; ：＆＃39; FILE *＆＃39;间接水平与＆＃39; int（__ cdecl *）（FILE *）＆＃39;
不同

infile = fclose;

您想致电fclose()而不是将其分配给infile（它也没有兼容类型）：

fclose(infile);

3.）错误3错误C2449：找到＆＃39; {＆＃39;在文件范围（缺少函数头？）

int SingleGame(char file_letter);

分号使其成为函数声明/原型，但您想要定义一个。删除它。

这里的分号是所谓的null statement）。这意味着如果两个变量都相等，那么就不会做任何事情。

if(file_letter == RetrieveGuess);

Answer 2

您的代码存在许多问题。一次处理多个问题总是很困难。我的建议是将所有这些代码复制到另一个文件中，并一次重建一行该文件，并在编译当前文件错误和警告后再添加另一行。

Answer 3

代码中有很多语法错误。我已经为你纠正过了。虽然逻辑上不确定代码是否正确。你得跑去看看。

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#define MAXGUESSES 5

void SingleGame(char file_letter);

int main()
{
    //declare additional variables
    int PlayGames = 4,
    i = 0;
    FILE* infile;
    char letter;
    //display instructions
    printf("Welcome to the Letter Guessing Game!\n");
    printf("You will enter the number of games that you want to play, which is 1-4 games\n");
    printf("You have 5 chances to guess each letter\n");
    printf("Let's begin!\n");

    //open file
    infile = fopen("lettersin.txt", "r");

    //get number of games to play
    printf("How many games would you like to play?(1-4)\n");
    scanf("%d", &PlayGames);

    for(i=0;i<PlayGames;i++)
    {
        //get a letter from file
        fscanf(infile, " %c", &letter);

        //Play one game
        printf("Let's play a game %d\n", i);

        //check for win or lose
        SingleGame (letter);
    }

    //close file
    fclose(infile);
    return 0;
}

void SingleGame(char file_letter)
{
//Function definitions
    int numGuesses = 0;
    while(numGuesses < MAXGUESSES)
    {
        char RetrieveGuess = 0;
        int PlayGames = 0;

        printf("Enter a guess\n");
        scanf("%c" , &RetrieveGuess);
        if(file_letter == RetrieveGuess)
        {
            printf("You guessed it!\n");
        }
        else
        {
            if(file_letter>RetrieveGuess)
            {
                printf("The letter you are trying to guess comes before:%d\n",RetrieveGuess);
            }
            else if(file_letter<RetrieveGuess)
            {
                printf("The letter you are trying to guess comes after:%d\n", RetrieveGuess);
            }

            numGuesses = numGuesses +1;
        }
    }
}

C程序中的猜字游戏，混淆了错误

3 个答案: