Write a program that asks the user to enter the amount that he or she has // budgeted for a month. call a function that uses a loop that prompts the user // to enter each of his or her expenses for the month and keep a running total. // the loop finishes when the user enters an expense of 0 at which time the function // returns the total for the monthly expenses. the program should display the amount // that the user is over or under budget.

The program is written in Python as it possesses a simple and clean syntax.

def getExpenses():    total_amount = 0    amount = float(input("Amount: $"))    total_amount += amount    while(amount !=0):        amount = float(input("Amount: $"))        total_amount += amount    return total_amount budget = float(input("Enter your monthly budget: $"))expenses = getExpenses()if(budget > expenses):    print("Under budget.")else:    print("Over budget.")

Explanation:

Line 1 - 11: (A function to prompt user for each of his/her expenses)

Create a variable total_amount to track the running total. Assign an initial value zero to the variable. (Line 2) Use Python built-in function input() to prompt user for expenses amount and assign the input to variable amount. (Line 4)Add the expenses amount to variable total_amount. (Line 5)Create a while loop to keep prompting user for expenses amount and add the expenses amount to variable total_amount until user input zero (Line 7-9)Return total_amount as output

Line 13: Get user input for monthly budget

Line 14: Call the function getExpenses() to obtain the total expenses from user

Line 16 - 19: Determine if user is over budget or under budget

Set an if condition - if budget is bigger than expenses, display "Under budget" (Line 17)else, display "Over budget" (Line 19)