#include <Windows.h> #include <iostream> int main() { SC_HANDLE hSCM = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); if (hSCM == NULL) { // 处理错误 return -1; } SC_HANDLE hService = OpenService(hSCM, L"EventLog", SERVICE_START); if (hService == NULL) { // 处理错误 CloseServiceHandle(hSCM); return -1; } if (!StartService(hService, 0, NULL)) { // 处理错误 CloseServiceHandle(hService); CloseServiceHandle(hSCM); return -1; } CloseServiceHandle(hService); CloseServiceHandle(hSCM); while(true) { DWORD pid = GetCurrentProcessId(); std::cout << "Current process ID: " << pid << std::endl; Sleep(2000); // 暂停 2 秒钟 } return 0; } 以上程序未进入死循环，执行一次就退出了。

这是因为在程序的最后，return 0;语句会导致程序正常退出。如果想让程序一直运行下去，可以将while循环放在return 0;语句前面，或者将return 0;删除即可。例如：

#include <Windows.h>
#include <iostream>

int main()
{
    SC_HANDLE hSCM = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
    if (hSCM == NULL)
    {
        // 处理错误
        return -1;
    }

    SC_HANDLE hService = OpenService(hSCM, L"EventLog", SERVICE_START);
    if (hService == NULL)
    {
        // 处理错误
        CloseServiceHandle(hSCM);
        return -1;
    }

    if (!StartService(hService, 0, NULL))
    {
        // 处理错误
        CloseServiceHandle(hService);
        CloseServiceHandle(hSCM);
        return -1;
    }

    CloseServiceHandle(hService);
    CloseServiceHandle(hSCM);

    while (true)
    {
        DWORD pid = GetCurrentProcessId();
        std::cout << "Current process ID: " << pid << std::endl;
        Sleep(2000); // 暂停 2 秒钟
    }
}