有没有办法获取我的C++应用程序的进程ID？

#include<iostream>
#include<windows.h>

int main() {
    DWORD processId = GetCurrentProcessId();
    std::cout << "The process ID is: "<< processId<< std::endl;
    return 0;
}

#include<iostream>
#include <unistd.h>

int main() {
    pid_t processId = getpid();
    std::cout << "The process ID is: "<< processId<< std::endl;
    return 0;
}