Using java and if statement. Problem $1$ and $2$ completed. Problem $3$: Write a program that acts as a mini$-$calculator. The

user will give you two integers followed by an operation $,$ or $-$

$.$ Your program will output the result of performing that operation

on those integers.

For example, if the user enters $3,6,$ and $*,$ then your program

should output $18$ since $3^{**}6=18.(5$ marks APP$)$

CHALLENGE: Try writing a calculator for three numbers and two

operations. This will obviously require you to consider BEDMAS in

your calculations. Note that this will not result in additional

marks... just a challenge for the hungry.