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posledela
3 years ago
10

Write a program that prints out the last few lines of a file. The program should be efficient, in that it seeks to near the end

of the file, reads in a block of data, and then goes backwards until it finds the requested number of lines; at this point, itshould print out those lines from beginning to the end of the file. To invoke the program, one should type: mytail -n file, where nis the number of lines at the end of the file to print.
Computers and Technology
1 answer:
vitfil [10]3 years ago
3 0

Answer:

is this a project?

Explanation:

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Last month Joe purchased some stock in Acme Software, Inc. Here are the details of the
fiasKO [112]

Shares_Purchased = 0.0

Amt_PaidPerShare = 0.0

Commission_Percentage = 0.0

Paid_WithoutCommission = 0.0

Commission_Paid = 0.0

Total_Paid = 0.0

Shares_Sold = 0.0

Amt_SoldPerShare = 0.0

Sale_Amount = 0.0

Earned_WithoutCommission = 0.0

Commission_PaidSale = 0.0

Total_Earned = 0.0

ProfitNoProfit = 0.0

#calculation starts from here

Shares_Purchased = float(input("How many shares did you purchase? \n "

"enter in 0.0 form: "))

Amt_PaidPerShare = float(input("How much did you pay per share? \n"

"enter in 0.0 form: "))

Commission_Percentage = float(input("What percentage is your stockbroker \n"

"Charging per transaction? enter in 0.00 form: "))

Paid_WithoutCommission = Amt_PaidPerShare * Shares_Purchased

Commission_Paid = Paid_WithoutCommission * Commission_Percentage

TotalPaid = Commission_Paid + Paid_WithoutCommission

Shares_Sold = float(input("How many shares did you sell? \n "

"enter in 0.0 form: "))

Amt_SoldPerShare = float(input("How much did you sell each share for? \n"

"enter in 0.0 form: "))

Earned_WithoutCommission = Amt_SoldPerShare * Shares_Sold

Commission_PaidSale = Earned_WithoutCommission * Commission_Percentage

Total_Earned = Earned_WithoutCommission - Commission_PaidSale

ProfitNoProfit = Total_Earned - Total_Paid

#printing the output

print ("You paid the following for the shares:")

print (Paid_WithoutCommission)

print ("You paid the following in commissions to your stockbroker for the purchase:")

print (Commission_Paid)

print ("In total, you paid:")

print (Total_Paid)

print ("You sold your shares for the amount of:")

print (Earned_WithoutCommission)

print ("You paid the following in commissions to your stockbroker for the sale:")

print (Commission_PaidSale)

print ("In total, your revenue is: ")

print (Total_Earned)

if ProfitNoProfit > 0:

   print ("You have earned a profit of: %s." % ProfitNoProfit)

elif ProfitNoProfit == 0:

   print ("You have broken even")

else: print ("You have lost this amount: %s." % ProfitNoProfit)

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