USE PYTHON ONLY USE DEF function. For number 68 Solution #!/usr/bin/python import sys #Global variables interest =0 montlyPayment =0 balance =0 interestPaidForMonth =0 reducOfPrincipal =0 eomBalance =0 # getInput Function definition is here def getInput(): global interest, montlyPayment, balance; interest = input(\"Enter annual rate of interest:\") montlyPayment= input(\"\ Enter monthly payment:\") balance= input(\"\ Enter beg. of month balance:\") interest = float(interest) montlyPayment=float(montlyPayment) balance=float(balance) return; # calculateOutput Function definition is here def calculateOutput(): global interestPaidForMonth, reducOfPrincipal, eomBalance interestPaidForMonth= ((balance*interest)/100)/12 reducOfPrincipal = montlyPayment-interestPaidForMonth eomBalance = balance-reducOfPrincipal return; def showOutput(): print(\"Interest paid For the month:\",round(interestPaidForMonth, 2)) print(\"\ Reduction of principal:\",round(reducOfPrincipal, 2)) print(\"\ End of month balance:\",round(eomBalance, 2)) def main(): getInput() calculateOutput(); showOutput() main() #In the question the value of reduction of principal is given wrong #Using python , call by reference is not possible.