C++ Thread function pass by reference

Question

I wonder how we can add a function passing by reference to thread.. Integer examples are so easy at Internet i\'ve found, but couldn\'t find any example pass by reference ?<

Answer 1

Solution 1: use std::ref:

    int number1 = 25;
    int number2 = 50;
    std::thread third(addp, std::ref(number1), std::ref(number2));

Solution 2: use a lambda:

    int number1 = 25;
    int number2 = 50;
    std::thread third([&] { addp(number1, number2); });