Is it possible to pass overloaded method to std::thread

Question

i am new to threading, i am trying to pass overloaded methods to std::thread like below example

#include <iostream>    
#include <thread>    

int do_calculation(int x)    
{    
   std::cout<<x;    
}    

float do_calculation(float x)    
{    
   std::cout<<x;    
}    

int main()    
{    
   std::thread t1(do_calculation,20);    
   std::thread t2(do_calculation,200.0f);    
   return 0;    
}

but the program is not compiling and throwing error that no matching function for call to 'std::thread::thread(<unresolved overloaded function type>, int)' std::thread t1(do_calculation,20);

Is there a way to call overloaded methods in thread?

Answer 1

You will need to cast the functions to resolve overloading:

std::thread t1(static_cast<int(*)(int)>(do_calculation),20);    
std::thread t2(static_cast<float(*)(float)>(do_calculation),200.0f);  

Additionally, you need to either join or detach your threads lest you risk a fun trip to std::terminate:

t1.join();
t2.join();

Demo