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#include <iostream>

void showProgressBar(const float prog = 0) {
  const int width = 50; // characters
  std::cout << "[";
  int pos = (int) (width * prog);
  for (int i = 0; i < width; ++i) {
    if(i < pos) {
      std::cout << "=";
    } else if(i == pos) {
      std::cout << ">";
    } else {
      std::cout << " ";
    }
  }
  std::cout << "] " << (int) (100*prog) << "%\r";
  std::cout.flush();
}
  }
  std::cout << "] " << (int) (100*prog) << "%\r";
  std::cout.flush();
}

void sleepMs(unsigned int ms) {
    int microsecs;
    struct timeval tv;
    microsecs = ms * 1000;
    tv.tv_sec  = microsecs / 1000000;
    tv.tv_usec = microsecs % 1000000;
    select(0, NULL, NULL, NULL, &tv);
}

int main() {
  for (float i = 0; i <= 100; ++i) {
    sleepMs(20); // to show progress animation
    showProgress(i/100);
  }
  std::cout << std::endl;
  showProgress(0.09);
  std::cout << std::endl;
}