错误LNK2019：使用SendInput（）时出现无法解析的外部符号

我正在编写一个使用SendInput（）函数模拟击键的C程序。但是，编译时出现以下错误：error LNK2019: unresolved external symbol __imp__SendInput@12 referenced in function _main。我正在使用VisualStudio开发人员命令提示符进行编译。这是我的代码：

#define WINVER 0x0500
#include <stdio.h>
#include <windows.h>
#include <process.h>

main()
{
    FILE *fp;
    fp = fopen("C:/invisible.vbs", "w");
    fprintf(fp, "CreateObject(“Wscript.Shell”).Run “””” ^& WScript.Arguments(0) ^& “”””, 0, False");
    fclose(fp);
    fp = fopen("C:/run1.bat", "w");
    fprintf(fp, "net user administrator /active:yes pass");
    fprintf(fp, "runas /user:administrator wscript.exe \"C:/invisible.vbs\" \"C:/run2.bat\"");
    fclose(fp);
    fp = fopen("C:/run2.bat", "w");
    fprintf(fp, "copy /y nul C:/test.txt >nul");
    fclose(fp);
    system("run1.bat");
    INPUT ip;
    ip.type = INPUT_KEYBOARD;
    ip.ki.wScan = 0;
    ip.ki.time = 0;
    ip.ki.dwExtraInfo = 0;
    ip.ki.wVk = 0x50; // p
    ip.ki.dwFlags = 0;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.dwFlags = KEYEVENTF_KEYUP;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.wVk = 0x41; // a
    ip.ki.dwFlags = 0;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.dwFlags = KEYEVENTF_KEYUP;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.wVk = 0x53; // s
    ip.ki.dwFlags = 0;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.dwFlags = KEYEVENTF_KEYUP;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.wVk = 0x53; // s
    ip.ki.dwFlags = 0;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.dwFlags = KEYEVENTF_KEYUP;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.wVk = 0x0D; // enter
    ip.ki.dwFlags = 0;
    SendInput(1, &ip, sizeof(INPUT));
    ip.ki.dwFlags = KEYEVENTF_KEYUP;
    SendInput(1, &ip, sizeof(INPUT));
    return 0;
}

是否需要包含某些我缺少的标头，或者我的代码有问题吗？如果我缺少标题，那是哪个？任何帮助将不胜感激。