BEGIN
	PROMPT user to enter the annual salary of the employee
	READ annual_salary

	REPEAT
		CALL income_tax_calc WITH annual_salary RETURNING income_tax
	UNTIL income_tax IS EQUAL TO 0

	DISPLAY "The income tax: ", income_tax
END

BEGIN income_tax_calc
	IF annual_salary IS GREATER THAN OR EQUAL TO 0 AND annual_salary IS LESS THAN 5x000 THEN
		income_tax = 0;
	ELSE IF annual_salary IS GREATER THAN OR EQUAL TO 5000 AND annual_salary IS LESS THAN 10000
		income_tax = annual_salary * 0.06;
	ELSE IF annual_salary IS GREATER THAN OR EQUAL TO 10000 AND annual_salary IS LESS THAN 20000
		income_tax = annual_salary * 0.15;
	ELSE IF annual_salary IS GREATER THAN OR EQUAL TO 20000 AND annual_salary IS LESS THAN 30000
		income_tax = annual_salary * 0.2;
	ELSE IF annual_salary IS GREATER THAN OR EQUAL TO 30000 AND annual_salary IS LESS THAN 40000
		income_tax = annual_salary * 0.25;
	ELSE IF annual_salary IS GREATER THAN OR EQUAL TO 40000
		income_tax = annual_salary * 0.3;
END income_tax_calc