I am a complete beginner and have the following instructions:

Develop a algorithm and flowchart that enables a user to choose one of

the following types of calculations to

perform on an input number.

Calculate the square of the number

Calculate the cube of the number

Round the number to two decimal places

Calculate the square root of the number

I only had to choose one and chose the "Calculate the square root of

the number".

I have the following algorithm

Algorithm

1. Input: a real number X

sqrt(x) = x^0.5

2. If (X < 0) Then

Output: X “ cannot be negative.”

STOP

Edif

My flowchart is on the following web page:

http://www.popeyeray.com/lesson6.htm
I would appreciate someone to check if this is mostly correct.

I also am not sure about the error message and how to put it into my

flowchart.

Thank you

Ray