写一个大鱼吃小鱼代码，C语言，在Dev-C++中可以运行

好的，这是一份简单的大鱼吃小鱼游戏的代码，可以在Dev-C++中运行：

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>
#include <time.h>

// 定义屏幕宽度和高度
#define WIDTH 60
#define HEIGHT 30

// 定义鱼的大小
#define FISH_SIZE 3

// 定义食物的大小
#define FOOD_SIZE 1

// 定义方向
#define UP 1
#define DOWN 2
#define LEFT 3
#define RIGHT 4

// 定义鱼的结构体
typedef struct fish {
    int x;
    int y;
    int direction;
    int size;
    struct fish *next;
} Fish;

// 定义食物的结构体
typedef struct food {
    int x;
    int y;
    struct food *next;
} Food;

// 初始化屏幕
void InitScreen()
{
    system("mode con cols=60 lines=30");
}

// 绘制边框
void DrawBorder()
{
    int i, j;
    for (i = 0; i < HEIGHT; i++) {
        for (j = 0; j < WIDTH; j++) {
            if (i == 0 || i == HEIGHT - 1 || j == 0 || j == WIDTH - 1) {
                printf("#");
            } else {
                printf(" ");
            }
        }
        printf("\n");
    }
}

// 绘制鱼
void DrawFish(Fish *fish)
{
    int i;
    for (i = 0; i < fish->size; i++) {
        if (fish->direction == UP) {
            printf("%c\n", 'A');
        } else if (fish->direction == DOWN) {
            printf("%c\n", 'V');
        } else if (fish->direction == LEFT) {
            printf("%c", '<');
        } else {
            printf(">%c", '\n');
        }
    }
}

// 绘制食物
void DrawFood(Food *food)
{
    printf("@\n");
}

// 初始化鱼
Fish *InitFish(int x, int y, int direction, int size)
{
    Fish *fish = (Fish *)malloc(sizeof(Fish));
    fish->x = x;
    fish->y = y;
    fish->direction = direction;
    fish->size = size;
    fish->next = NULL;
    return fish;
}

// 初始化食物
Food *InitFood(int x, int y)
{
    Food *food = (Food *)malloc(sizeof(Food));
    food->x = x;
    food->y = y;
    food->next = NULL;
    return food;
}

// 生成食物
void GenerateFood(Food **head, Fish *fish)
{
    int x, y;
    do {
        x = rand() % (WIDTH - 2) + 1;
        y = rand() % (HEIGHT - 2) + 1;
    } while (x == fish->x && y == fish->y);
    Food *food = InitFood(x, y);
    food->next = *head;
    *head = food;
}

// 移动鱼
void MoveFish(Fish *fish)
{
    if (fish->direction == UP) {
        fish->y--;
    } else if (fish->direction == DOWN) {
        fish->y++;
    } else if (fish->direction == LEFT) {
        fish->x--;
    } else {
        fish->x++;
    }
}

// 改变鱼的方向
void ChangeDirection(Fish *fish)
{
    char ch = getch();
    if (ch == 'W' || ch == 'w') {
        fish->direction = UP;
    } else if (ch == 'S' || ch == 's') {
        fish->direction = DOWN;
    } else if (ch == 'A' || ch == 'a') {
        fish->direction = LEFT;
    } else if (ch == 'D' || ch == 'd') {
        fish->direction = RIGHT;
    }
}

// 判断是否吃到食物
int EatFood(Fish *fish, Food **head)
{
    Food *prev = NULL;
    Food *current = *head;
    while (current != NULL) {
        if (fish->x == current->x && fish->y == current->y) {
            if (prev == NULL) {
                *head = current->next;
            } else {
                prev->next = current->next;
            }
            free(current);
            return 1;
        }
        prev = current;
        current = current->next;
    }
    return 0;
}

// 判断是否碰到边界或自身
int IsGameOver(Fish *fish)
{
    if (fish->x == 0 || fish->x == WIDTH - 1 || fish->y == 0 || fish->y == HEIGHT - 1) {
        return 1;
    }
    Fish *current = fish->next;
    while (current != NULL) {
        if (fish->x == current->x && fish->y == current->y) {
            return 1;
        }
        current = current->next;
    }
    return 0;
}

// 添加新的鱼身体
void AddFishBody(Fish *fish)
{
    Fish *newBody = InitFish(fish->x, fish->y, fish->direction, fish->size);
    newBody->next = fish->next;
    fish->next = newBody;
    fish->size++;
}

// 释放链表内存
void FreeList(Fish *fish, Food *food)
{
    while (fish != NULL) {
        Fish *temp = fish;
        fish = fish->next;
        free(temp);
    }
    while (food != NULL) {
        Food *temp = food;
        food = food->next;
        free(temp);
    }
}

int main()
{
    srand((unsigned)time(NULL)); // 设置随机种子

    InitScreen(); // 初始化屏幕

    DrawBorder(); // 绘制边框

    Fish *fish = InitFish(WIDTH / 2, HEIGHT / 2, UP, FISH_SIZE); // 初始化鱼

    Food *foodList = NULL; // 初始化食物链表

    int score = 0; // 初始化得分

    while (1) {
        system("cls"); // 清屏

        DrawBorder(); // 绘制边框

        DrawFish(fish); // 绘制鱼

        DrawFood(foodList); // 绘制食物

        if (EatFood(fish, &foodList)) { // 判断是否吃到食物
            AddFishBody(fish); // 添加新的鱼身体
            score++; // 更新得分
        }

        if (IsGameOver(fish)) { // 判断是否游戏结束
            printf("Game Over!\n");
            printf("Your Score: %d\n", score);
            break;
        }

        ChangeDirection(fish); // 改变鱼的方向

        MoveFish(fish); // 移动鱼

        if (rand() % 10 == 0) { // 有一定概率生成新的食物
            GenerateFood(&foodList, fish);
        }

        Sleep(100); // 延迟一段时间，控制游戏速度
    }

    FreeList(fish, foodList); // 释放链表内存

    return 0;
}

运行后，你可以使用 W、S、A、D 控制鱼的方向，尝试吃到食物并且不碰到边界或自身，得到更高的分数。