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- # Задача 1
- # Потребител въвежда аритметичен израз от клавиатурата. Например, 23+12.
- # # Резултатът от израза трябва да се изведе на екрана. В нашия пример той е 35.
- # Един аритметичен израз може да се състои само от три части: число, операция, число.
- # Възможните операции са +, -, *, /.
- aritm_express = input("Please arithmetic expression: ")
- left_num = ""
- flag_left = True
- right_num = ""
- aritm_operation = ""
- for i in aritm_express:
- if (48 <= ord(i) <= 57) and (ord(i) != 43 or ord(i) != 45 or ord(i) != 42 or ord(i) != 47)\
- and flag_left == True:
- left_num += i
- elif ord(i) == 43 or ord(i) == 45 or ord(i) == 42 or ord(i) == 47:
- flag_left = False
- aritm_operation = i
- elif (48 <= ord(i) <= 57) and (ord(i) != 43 or ord(i) != 45 or ord(i) != 42 or ord(i) != 47)\
- and flag_left == False:
- right_num += i
- if left_num.isdigit() and right_num.isdigit():
- if ord(aritm_operation) == 43:
- sum_num = int(left_num) + int(right_num)
- print(f"The sum of the numbers is {sum_num}")
- elif ord(aritm_operation) == 45:
- diff_num = int(left_num) - int(right_num)
- print(f"The difference of the numbers is: {diff_num}")
- elif ord(aritm_operation) == 42:
- multipl_num = int(left_num) * int(right_num)
- print(f"The multiplication of numbers is: {multipl_num}")
- elif ord(aritm_operation) == 47:
- if int(right_num) == 0:
- print("Is not divisible by 0")
- else:
- div_num = int(left_num) / int(right_num)
- print(f"The quotient of the numbers is: {div_num}")
- else:
- print("Аrithmetic expression cannot contain letters")
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