C 代码 - 猜谜游戏 - 函数问题

Question

好的，我已经看了好几个小时了，可能只是因为太晚了，但我脑残了。所以代码应该完成以下工作：

1. 显示说明
2. 询问用户要玩的游戏数
3. 每场比赛 一种。从文件中获取一封信 湾。玩一场游戏 一世。虽然仍有猜测 ii.从玩家那里得到猜测 iii.将猜测与文件中的字母进行比较 iv.如果猜测正确，则返回 1 v. 否则增加计数器 六。如果 5 次猜测不正确，则返回 0 C。检查输赢

这是我到目前为止的代码，有什么想法可以让这个东西正常运行吗？：

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


//Pre-Processor Directives

void gameRules();
//Game Instructions

int singleGame(char fileLetter);
//Checks guesses, returns 0 after 5 incorrect attempts

char retrieveGuess();
//Prompts user for guess and returns guess
//Called from inside singleGame function

int guessedIt(char answer, char inputLetter);
//Lets user know if answer comes before or after their guess.
//Returns 1 if answer is correct, and 0 for incorrect.
//Called from inside singleGame function.




int main()
{
    char fileLetter = 'a';
    FILE* filePtr;
    int numOfGames = 0;
    int counter = 0;
    //run it

//Rules of Game
gameRules();

//File pointer that opens the file, "r" stands for reading the file
filePtr = fopen("lettersin.txt", "r");

/* File checking if-else

if (filePtr == NULL)
{
    printf("I don't exist");
}
else
{
    printf("I'm alive");
}
*/  

printf("How many games would you like to play? (Pick from 1-4)\n");
scanf("%d", &numOfGames);

for (counter = 0; counter < numOfGames; counter++)
{
    //Pulls a letter from the file and writes it to variable "fileLetter"
    //Note to self: make sure to include "filePtr" so fscanf knows where to pull from
    fscanf(filePtr, " %c", &fileLetter);
    singleGame(fileLetter);
}

//Closes file, not necessary now, but good for later on in bigger programs that may need more files
fclose(filePtr);
return 0;
}

//Game rules function
void gameRules()
{
printf("Welcome to the Letter Guessing Game\n");
printf("You will enter the number of games you want to play (1-4 games).\n");
printf("You have 5 chances to guess each letter.\n");
printf("Let's begin:\n");
}

//Single Game Function
int singleGame(char fileLetter)
{
int numGuesses = 0;

while (numGuesses < MAXGUESSES)
{
    retrieveGuess();
    numGuesses = numGuesses + 1;
}

return 0;
}

//Guess retrieval function
char retrieveGuess()
{
char inputLetter;
printf("What is your guess? (Lowercase letters only, please)\n");
scanf(" %c", &inputLetter);
int guessedIt(char fileLetter, char inputLetter);
}

//Correct, or not, function
int guessedIt(char fileLetter, char inputLetter)
{
if (fileLetter == inputLetter)
{
    printf("You guessed it!\n");
    return '1';
}

else if (inputLetter < fileLetter)
{
    printf("The letter comes after your guessed letter.\n");
    return '0';
}

else
{
    printf("The letter comes before your guessed letter.\n");
    return '0';
}
}

Answer 1

一些事情：

//Single Game Function
int singleGame(char fileLetter)
{
    int numGuesses = 0;

    while (numGuesses < MAXGUESSES)
    {
        retrieveGuess();
        numGuesses = numGuesses + 1;
        // You should return 1 here if the guess is right, no?
        // Something like:
        // char guessedChar = retrieveGuess();
        // place call for function guessedIt here and if it
        // is 1 return the result (if it's 0, don't return, let it keep looping)
    }

    return 0;
}

这个函数：

//Guess retrieval function
char retrieveGuess()
{
char inputLetter;
printf("What is your guess? (Lowercase letters only, please)\n");
scanf(" %c", &inputLetter);
int guessedIt(char fileLetter, char inputLetter);
}

没有返回任何东西。对于定义为返回某些内容的每个函数，您都需要一个 return 语句。另外，我认为最后一个语句甚至没有意义，只需返回inputLetter

这个函数：

//Correct, or not, function
int guessedIt(char fileLetter, char inputLetter)
{
    if (fileLetter == inputLetter)
    {
        printf("You guessed it!\n");
        return '1';
    }

    else if (inputLetter < fileLetter)
    {
        printf("The letter comes after your guessed letter.\n");
        return '0';
    }

    else
    {
        printf("The letter comes before your guessed letter.\n");
        return '0';
    }
}

正在返回 char ('1'/'0')，即使它声明要返回 int。你想写return 1;/return 0;。你应该把它放在我放 cmets 的地方