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Faulty calculator using Python

  • Difficulty Level : Easy
  • Last Updated : 01 Jul, 2021

A faulty calculator is simply a calculator which operates simple tasks, but in some cases (set by the programmer) it gives the wrong output. You all must be wondering why do we need a faulty calculator? This type of calculator is not needed unless you want to prank someone or prove them wrong in case of some maths problem.


  • First, we take input from the user that what he/she wants to do
  • Then we write the code of Addition, Subtraction, Multiplication, and Division
  • And lastly, we insert those cases that we want wrong results.



print("what type of arithmetic operation you want to do?\n"
      "type + for addition\n"
      "type - for subtraction\n"
      "type / for division\n"
      "type* for multiplication\n")
# taking input
type_of_calculation = input()
print("enter the first number")
A = int(input())
print("enter the second number\n")
B = int(input())
b = "+"
c = "-"
d = "*"
e = "/"
# setting normal and false condition for calculator
if type_of_calculation == b:
    # for addition
    if (A == 53 and B == 9) or (A == 90 and B == 52):
elif type_of_calculation == c:
    # for subtraction
elif type_of_calculation == d:
    # for multiplication
    if A == 45 and B == 3 or A == 4 and B == 67:
elif type_of_calculation == e:
    # for division
    if A == 5 and B == 63:


For normal condition

For false condition

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