spawn a thread that print a loading spin on the terminal

text_spin.cpp

#include <iostream>
#include <thread>
#include <unistd.h>
using namespace std;

int main(int argc, char* argv[]){
  thread([](){
    for(char symbol = 0;;usleep(100000)){
      cout << "\r" << (0==++symbol%4?"|":
                       1==symbol%4?"/":
                       2==symbol%4?"-":
                       "\\") << flush;
    }
  }).detach();

  // DO SOMETHINGS

  for(;;){}
  return 0;
}

compile on linux with pthread librery, like:
g++ -std=c++11 -pthread text_spin.cpp -o text_spin