$1.$Implement the following code.

$[$Branching$]$ Assume the following tax rule:

$1.$ No tax is paid on the first $$15000$ of net income.

$2.$ A tax of $5\%$ is assessed on each dollar of net income from $$15000$ to $$30000.$

$3.$ A tax of $10\%$ is assessed on each dollar of net income over $$30000.$

In your program, allow the user to type in his income, then your code will output the amount of tax that he$/$she needs to pay.