Simple pthread! C++

Question

I have no idea why this doesn't work

#include <iostream> #include <pthread.h> using namespace std;  void *print_message(){      cout << "Threading\n"; }    int main() {      pthread_t t1;      pthread_create(&t1, NULL, &print_message, NULL);     cout << "Hello";      return 0; } 

The error:

[Description, Resource, Path, Location, Type] initializing argument 3 of 'int pthread_create(pthread_t*, const pthread_attr_t*, void* (*)(void*), void*)' threading.cpp threading/src line 24 C/C++ Problem

Answer 1

You should declare the thread main as:

void* print_message(void*) // takes one parameter, unnamed if you aren't using it