Answer to Question #243466 in Python for balu

Question

Write a program to create a menu-driven calculator that performs basic arithmetic operations (+, -, *, /, and %).Input

The input will be a single line containing two integers and operator(+, -, *, /, and %) similar to 3 + 5.Output

If the given operator is "+", print the sum of two numbers.

If the given operator is "-", print the result of the subtraction of the two numbers.

If the given operator is "*", print the multiplication of the two numbers.

For example, if the given operator is "+" and the two numbers are 3 and 5. As it is an addition operator, your code should print the sum of the given two numbers (3 + 5), which is 8.

Similarly, if the given operator is "*" and the two numbers are 2 and 5.

Similarly, if the given operator is "-" and the two numbers are 10 and 9.

Sample Input 1

3 + 5

Sample Output 1

8

Sample Input 2

2 * 5

Sample Output 2

input will be single line only

Answer 1

str = input('Please enter a math expression: ')
number1 = ''
number2 = ''
operation = ''
for i in range(len(str)):
    if not str[i] in ['+', '-', '*', '/', '%']:
        number1 += str[i]
    else:
        operation = str[i]
        number2 = str[i + 1:len(str)]
        break
if operation == "+":
    print(int(number1) + int(number2))
elif operation == '-':
    print(int(number1) - int(number2))
elif operation == '*':
    print(int(number1) * int(number2))
elif operation == '/':
    print(int(number1) / int(number2))
elif operation == '%':
    print(int(number1) % int(number2))
else:
    print('Error')