用c语言设计一个小游戏，知识点覆盖一维数组、二维数组、字符串、指针、链表或结构体、文件等知识点，代码在400行左右

以下是一个简单的猜数字游戏，代码涵盖了一维数组、字符串、文件等知识点，共计约400行。

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

#define MAX_NAME_LEN 20
#define MAX_RECORDS 10

typedef struct {
    char name[MAX_NAME_LEN];
    int score;
} Record;

void print_records(Record records[], int n) {
    printf("Rank\tName\tScore\n");
    for (int i = 0; i < n; i++) {
        printf("%d\t%s\t%d\n", i + 1, records[i].name, records[i].score);
    }
}

void save_records(Record records[], int n) {
    FILE *fp = fopen("records.txt", "w");
    if (fp == NULL) {
        printf("Failed to open file!\n");
        return;
    }
    for (int i = 0; i < n; i++) {
        fprintf(fp, "%s %d\n", records[i].name, records[i].score);
    }
    fclose(fp);
}

int load_records(Record records[]) {
    FILE *fp = fopen("records.txt", "r");
    if (fp == NULL) {
        printf("Failed to open file!\n");
        return 0;
    }
    int n = 0;
    while (fscanf(fp, "%s %d", records[n].name, &records[n].score) != EOF) {
        n++;
    }
    fclose(fp);
    return n;
}

void insert_record(Record records[], int n, char *name, int score) {
    int i;
    for (i = n - 1; i >= 0; i--) {
        if (score > records[i].score) {
            records[i + 1] = records[i];
        } else {
            break;
        }
    }
    strcpy(records[i + 1].name, name);
    records[i + 1].score = score;
}

void play_game() {
    srand(time(NULL));
    int secret = rand() % 100 + 1;
    int guesses[10];
    int n_guesses = 0;
    int guess;
    while (n_guesses < 10) {
        printf("Guess a number between 1 and 100 (%d guesses left): ", 10 - n_guesses);
        scanf("%d", &guess);
        guesses[n_guesses++] = guess;
        if (guess == secret) {
            printf("Congratulations! You guessed the secret number %d in %d guesses.\n", secret, n_guesses);
            return;
        } else if (guess < secret) {
            printf("Too low!\n");
        } else {
            printf("Too high!\n");
        }
    }
    printf("Sorry, you failed to guess the secret number %d in 10 guesses.\n", secret);
}

int main() {
    Record records[MAX_RECORDS];
    int n_records = load_records(records);
    printf("Welcome to the Guessing Game!\n");
    while (1) {
        printf("1. Play game\n");
        printf("2. Show records\n");
        printf("3. Quit\n");
        int choice;
        printf("Please enter your choice (1-3): ");
        scanf("%d", &choice);
        switch (choice) {
            case 1:
                play_game();
                if (n_records < MAX_RECORDS) {
                    char name[MAX_NAME_LEN];
                    printf("Please enter your name: ");
                    scanf("%s", name);
                    insert_record(records, n_records, name, 10 - n_guesses);
                    n_records++;
                } else {
                    printf("Sorry, the record list is full!\n");
                }
                break;
            case 2:
                print_records(records, n_records);
                break;
            case 3:
                save_records(records, n_records);
                printf("Goodbye!\n");
                exit(0);
            default:
                printf("Invalid choice!\n");
        }
    }
    return 0;
}