محرر الكود ينفذ ما بداخل جملة الشرط رغم أن الشرط لم يتحقق!

var experience;
var is_married;

write("Enter years of experience : ");
experience = read();

write("Are you married (yes/no): ");
is_married = read();

if(experience >= 1)
{
  if(is_married == "yes")
  {
    write("Your salary is 1000 per month.");
  }
  else if(is_married == "no")
  {
    write("Your salary is 800 per month.");
  }
  else
  {
    write("To answer write \"yes\" or \"no\"");
  }   
}
else 
{
  write("You dont have one year experience.");
}

Enter years of experience : 0
Are you married (yes/no): no
You dont have one year experience.
Done Execution