C++11 std::thread example

threadtest.cpp

// compile with g++-4.7 -std=c++11 -pthread threadtest.cpp -o threadtest

#include <iostream>
#include <thread>
#include <cstdlib>
#include <chrono>

static const int num_threads = 10;

int main() {

    srand((unsigned)time(nullptr));

    std::thread threads[num_threads];

    for (int i = 0; i < num_threads; ++i) {
        threads[i] = std::thread([=]() {
                std::this_thread::sleep_for(std::chrono::milliseconds(rand() % 100));
                std::cout << "Launched from thread " << i << std::endl;
        });
    }

    std::cout << "Launched from main" << std::endl;

    for (auto &thread : threads) {
        thread.join();
    }

    return 0;
}