My code is similar to the following:

int main()
{
     values();
}

int values()
{
     if (condition)
     {
          'code'
     }
     else if (condition)
     {
          'code'
     }
     else 
     {
          'code'
     }
         motors();
}

int motors()
{
     'code'
}

motors() needs values from values() to run. What could I do so that values() and motors() run simultaneously, side by side, and keep running until the user exits out of the program?