Introduction - If you have any usage issues, please Google them yourself
Each of the following function to write a function, and in the main function call.
calculation of average after-tax income, and the output of each person s after-tax income
detect people s income can not meet expenses, and to output the name, income and expenses
calculation of the average loan amount and the repayment amount is less than the average output level of the person s name, income, expenditure
write a function to achieve: a bubbling method in accordance with the table name sort order and sort output after the name, income, taxes and expenses.