c语言中写一个用户可选择一星或者二星的程序 用鼠标点击选择

这个问题需要使用图形界面库来实现，比如说Qt或者WinAPI。以下是一个WinAPI实现的示例代码：

#include <Windows.h>

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    // 创建窗口
    WNDCLASS wc;
    ZeroMemory(&wc, sizeof(WNDCLASS));
    wc.lpfnWndProc = WndProc;
    wc.hInstance = hInstance;
    wc.lpszClassName = L"MyWindowClass";
    wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    RegisterClass(&wc);
    HWND hWnd = CreateWindow(
        L"MyWindowClass",
        L"选择星级",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        400,
        300,
        NULL,
        NULL,
        hInstance,
        NULL);
    
    // 创建控件
    HWND hOneStarButton = CreateWindow(
        L"BUTTON",
        L"一星",
        WS_CHILD | WS_VISIBLE | BS_RADIOBUTTON,
        100,
        100,
        100,
        50,
        hWnd,
        (HMENU)1,
        hInstance,
        NULL);
    HWND hTwoStarButton = CreateWindow(
        L"BUTTON",
        L"二星",
        WS_CHILD | WS_VISIBLE | BS_RADIOBUTTON,
        200,
        100,
        100,
        50,
        hWnd,
        (HMENU)2,
        hInstance,
        NULL);
    SendMessage(hOneStarButton, BM_SETCHECK, BST_CHECKED, 0); // 默认选中一星

    // 显示窗口
    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);

    // 消息循环
    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return (int)msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_COMMAND:
    {
        if (HIWORD(wParam) == BN_CLICKED)
        {
            if (LOWORD(wParam) == 1)
            {
                MessageBox(hWnd, L"您选择了一星", L"提示", MB_OK);
            }
            else if (LOWORD(wParam) == 2)
            {
                MessageBox(hWnd, L"您选择了二星", L"提示", MB_OK);
            }
        }
    }
    break;

    case WM_DESTROY:
        PostQuitMessage(0);
        break;

    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }

    return 0;
}

这个程序创建了一个窗口，并在窗口中创建了两个单选按钮，分别代表一星和二星。当用户点击一个按钮时，程序会弹出一个消息框显示用户的选择。注意，该程序只是为了示例，还需要加入错误处理和其他必要的代码。