ここでは、SDLライブラリを使用してC言語でスネークゲームを作成するステップ1のコード例を示します：

```
#include <SDL2/SDL.h>

const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

int main(int argc, char* argv[])
{
    // Initialize the SDL library
    if (SDL_Init(SDL_INIT_VIDEO) < 0)
    {
        fprintf(stderr, "SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
        return 1;
    }

    // Create a window
    SDL_Window* window = SDL_CreateWindow("Snake Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
    if (window == NULL)
    {
        fprintf(stderr, "Window could not be created! SDL_Error: %s\n", SDL_GetError());
        return 1;
    }

    // Quit SDL and destroy the window
    SDL_Quit();
    SDL_DestroyWindow(window);

    return 0;
}
```

以下は、SDLライブラリを使用してC言語でスネークゲームを作成するステップ1のコード例です：

```c
#include <SDL2/SDL.h>

const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

int main(int argc, char* argv[])
{
    // Initialize the SDL library
    if (SDL_Init(SDL_INIT_VIDEO) < 0)
    {
        fprintf(stderr, "SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
        return 1;
    }

    // Create a window
    SDL_Window* window = SDL_CreateWindow("Snake Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
    if (window == NULL)
    {
        fprintf(stderr, "Window could not be created! SDL_Error: %s\n", SDL_GetError());
        return 1;
    }

    // Quit SDL and destroy the window
    SDL_Quit();
    SDL_DestroyWindow(window);

    return 0;
}
```

このコードは SDL ライブラリを初期化し、指定した幅と高さのウィンドウを作成します。この例では、ウィンドウのタイトルを "Snake Game" とします。このコードには、初期化やウィンドウの作成に失敗した場合のエラー処理も含まれています。
Here is an example code for step 1 of creating a snake game in C using the SDL library:

#include <SDL2/SDL.h>

const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

int main(int argc, char* argv[])
{
    // Initialize the SDL library
    if (SDL_Init(SDL_INIT_VIDEO) < 0)
    {
        fprintf(stderr, "SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
        return 1;
    }

    // Create a window
    SDL_Window* window = SDL_CreateWindow("Snake Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
    if (window == NULL)
    {
        fprintf(stderr, "Window could not be created! SDL_Error: %s\n", SDL_GetError());
        return 1;
    }

    // Quit SDL and destroy the window
    SDL_Quit();
    SDL_DestroyWindow(window);

    return 0;
}


Here is an example code for step 1 of creating a snake game in C using the SDL library:

c
Copy code
#include <SDL2/SDL.h>

const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

int main(int argc, char* argv[])
{
    // Initialize the SDL library
    if (SDL_Init(SDL_INIT_VIDEO) < 0)
    {
        fprintf(stderr, "SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
        return 1;
    }

    // Create a window
    SDL_Window* window = SDL_CreateWindow("Snake Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
    if (window == NULL)
    {
        fprintf(stderr, "Window could not be created! SDL_Error: %s\n", SDL_GetError());
        return 1;
    }

    // Quit SDL and destroy the window
    SDL_Quit();
    SDL_DestroyWindow(window);

    return 0;
}
This code initializes the SDL library and creates a window with the specified width and height. In this example, the window will have the title "Snake Game". The code also includes error handling for if the initialization or window creation fails.