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// Глобальные переменные

uint8_t *map = NULL;
int map_width = 0;
int map_height = 0;

bool load_level(const char *filename) {
    FILE *file = fopen(filename, "r");
    if (!file) {
        printf("Ошибка: Не удалось открыть файл %s\n", filename);
        return false;
    }

    char lines[512][512];
    int h = 0;
    char buffer[512];

    while (fgets(buffer, sizeof(buffer), file)) {
        buffer[strcspn(buffer, "\r\n")] = 0;
        if (buffer[0] == '\0' || buffer[0] == ';') continue;

        bool contains_map_char = false;
        for(int i=0; buffer[i]; i++) {
            if (strchr("#$@.*+ ", buffer[i])) {
                contains_map_char = true;
                break;
            }
        }
        
        if (contains_map_char) {
            strncpy(lines[h], buffer, 511);
            h++;
            if (h >= 512) break;
        }
        if (h > 0 && buffer[0] == '\0') break;
    }
    fclose(file);

    if (h == 0) return false;

    int w = 0;
    for (int i = 0; i < h; i++) {
        int len = strlen(lines[i]);
        if (len > w) w = len;
    }

    map = malloc(w * h * sizeof(uint8_t));
    map_width = w;
    map_height = h;
    memset(map, CELL_EMPTY, w * h);

    for (int y = 0; y < h; y++) {
        for (int x = 0; x < w; x++) {
            char c = (x < (int)strlen(lines[y])) ? lines[y][x] : ' ';
            if (c == '#') map[y * w + x] = CELL_WALL;
            else if (c == '$') map[y * w + x] = CELL_CUBE;
            else if (c == '.') map[y * w + x] = CELL_TARGET;
            else if (c == '*') map[y * w + x] = CELL_CUBE_ON_TARGET;
            else if (c == '@') { map[y * w + x] = CELL_EMPTY; playerX = x; playerY = y; }
            else if (c == '+') { map[y * w + x] = CELL_TARGET; playerX = x; playerY = y; }
            else map[y * w + x] = CELL_EMPTY;
        }
    }
    return true;
}

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Example #3: The ``Ultimate''
                      +-----------------------------+
                      |                  +---+      |
                      |  +---+           |+-+|      |
                      |  ^   |           |^ ||      |
                void (*signal(int, void (*fp)(int)))(int);
                 ^    ^      |      ^    ^  ||      |
                 |    +------+      |    +--+|      |
                 |                  +--------+      |
                 +----------------------------------+
Question we ask ourselves: What is `signal'?