终端无输出的C语言猜单词游戏代码排查请求

我正在开发课程作业Hangman（猜单词）游戏，作业今日截止，但代码突然不再在终端输出内容，请求帮忙排查代码以完成提交。

原代码： #

char **readWordList(char *, int *);

int main(int argc, char *argv[]) {
    char **wordList;
    char inputFile[100];
    int count = 0;
    int i;

    if (argc != 2) {
        printf("You need to provide the word list file name.
 ");
        printf("Usage: $0 filename\n");
        return -1;
    }
    wordList = readWordList(argv[1], &count);  //函数（目标输入，计数占位变量）
    if (wordList == NULL) {
        printf("Read word failed\n");
        exit(1);
    }
    printf("fortnite");
    int a = 0;   //占位变量
    int b = 0;
    int c = 0;
    int v = 0;
    int g = 0;
    int hit = 0;
    srand(time(NULL)); //用于单词选择的随机变量
    int r = rand() % 3;
    int chances = 10;
    char *word = wordList[r]; //从line.txt中获取单词地址
    char guess;
    char misses[10];
    int lettercount = 0;
    //通过读取随机选中的单词生成空白变量
    for (size_t a = 0; word[a] != 0; a++) {
        lettercount++;
    }

    char space[lettercount];
    //在临时数组中用下划线替换空格
    for (size_t c = 0; word[c] != '\0'; c++) {
        space[c] = 95;
    }

    char blank[lettercount * 2]; //与数组大小相等的空数组
    //借鉴我的spacename函数，但现在空白输入中似乎出现了异常
    int t = 0;
    int k = 0;
    while (space[t] != '\0') {
        k = 2 * t;
        if (k > lettercount * 2 - 2) {
            blank[k] = space[t];
            break;
        }
        blank[k] = space[t];
        blank[k + 1] = ' ';
    }

    while (chances > 0) {
        printf("Chances:%d\n", chances);
        printf("Misses:%d\n", misses);
        printf("Word:%s\n", blank);
        printf("Guess[Q]:");
        scanf("%c\n", &guess);
        while (word[b] != '\0') {
            if (guess = 'Q') {
                exit(0);
            }
            if (guess = word[b]) {
                v = b * 2;
                blank[v] = guess;
                b++;
                hit = 1;
            }
            b++;
        }
        if (hit != 1) {
            misses[g] = guess;
        }
        if (hit = 1) {
            hit = 0;
        }
        chances--;
        g++;
    }
}

核心问题与修复方案： #

• 语法错误导致编译异常：第一个printf中的换行符写成了换行而非\n，直接触发语法错误，需改为printf("You need to provide the word list file name.\n");。
• scanf输入阻塞：scanf("%c\n", &guess);中的\n会让程序等待额外空白字符，改为scanf(" %c", &guess);（前置空格跳过换行、空格等空白），避免输入卡住。
• 赋值与比较混淆：多处用=（赋值）代替==（比较），比如if (guess = 'Q')会直接把'Q'赋值给guess，导致逻辑完全错误，所有判断处需替换为==。
• 字符串未加终止符：
  • space数组未添加\0，导致while (space[t] != '\0')循环越界，填充后需加space[lettercount] = '\0';。
  • blank数组未加\0，printf输出时会读取乱码，构造完成后需补充终止符。
  • misses数组未初始化，且printf("Misses:%d\n", misses);用错格式符，字符数组应使用%s，同时要确保每次添加字符后补\0。
• 循环变量未重置：内层while (word[b] != '\0')循环后，b未重置为0，导致后续循环无法遍历单词，需在每次猜字母后将b置0。
• 随机数越界风险：rand() % 3固定取0-2索引，但单词列表长度由count决定，应改为rand() % count避免访问非法内存。
• 缺失必要头文件：代码使用了printf、exit、srand等函数，需在开头添加：

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

  否则会出现函数未定义的异常。

修改后的关键修复版本： #

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

char **readWordList(char *, int *);

int main(int argc, char *argv[]) {
    char **wordList;
    int count = 0;

    if (argc != 2) {
        printf("You need to provide the word list file name.\n");
        printf("Usage: %s filename\n", argv[0]);
        return -1;
    }
    wordList = readWordList(argv[1], &count);
    if (wordList == NULL) {
        printf("Read word failed\n");
        exit(1);
    }

    int b = 0;
    int g = 0;
    int hit = 0;
    srand(time(NULL));
    int r = rand() % count;
    int chances = 10;
    char *word = wordList[r];
    char guess;
    char misses[11] = {0};
    int lettercount = strlen(word);

    char space[lettercount + 1];
    for (int c = 0; word[c] != '\0'; c++) {
        space[c] = '_';
    }
    space[lettercount] = '\0';

    char blank[lettercount * 2];
    int t = 0;
    int k = 0;
    while (space[t] != '\0') {
        k = 2 * t;
        blank[k] = space[t];
        if (k < lettercount * 2 - 1) {
            blank[k + 1] = ' ';
        }
        t++;
    }
    blank[lettercount * 2 - 1] = '\0';

    while (chances > 0) {
        printf("Chances:%d\n", chances);
        printf("Misses:%s\n", misses);
        printf("Word:%s\n", blank);
        printf("Guess[Q]:");
        scanf(" %c", &guess);

        if (guess == 'Q' || guess == 'q') {
            exit(0);
        }

        hit = 0;
        b = 0;
        while (word[b] != '\0') {
            if (guess == word[b]) {
                int v = b * 2;
                blank[v] = guess;
                hit = 1;
            }
            b++;
        }

        if (!hit && g < 10) {
            misses[g] = guess;
            g++;
        }

        chances--;
    }

    printf("Game Over! The word was: %s\n", word);
    return 0;
}

内容的提问来源于stack exchange，提问作者black_bleu