C语言 -- CreateProcess创建进程

wchar_t lp[] = L"/c calc";
    PROCESS_INFORMATION pi = {0};
    STARTUPINFO si = { 0 };
    BOOL b=CreateProcess(
       L"C:\Windows\System32\cmd.exe",
       lp,NULL,NULL,TRUE,CREATE_NO_WINDOW,NULL, NULL, &si, &pi
    );