calculator using Python
first_number = float(input("Enter first number :")) op = input("Enter operator :")
second_number = float(input("Enter second number :")) if op == "+": print(first_number + second_number) elif op == "-": print(first_number-second_number) elif op == "*": print(first_number * second_number) elif op == "/": print(first_number / second_number) else: print("invalid operator")