Calculator - MarisaOJ: Marisa Online Judge

Design a calculator capable of performing four operations: - Addition

+

$+$ . - Subtraction

-

$-$ . - Multiplication

\cdot

$*$ . - Division

/

$/$ . with two real numbers

a, b

$a, b$ . ### Input - One line containing a real number

a

$a$ , a character representing the operation, and finally another real number

b

$b$ . ### Output - Print the result of the operation. Round the result to the third decimal place. If the calculation is invalid, print

z e

$ze$ . ### Constraints -

- 1000 \leq a, b \leq 1000

$-1000 \le a, b \le 1000$ . ### Sample Input:

4 \cdot 5

$4 * 5$

Output:

20.000

$20.000$

Topic

Basic

Rating

800

Solution (0)

Solution