CalculatorREXX

This is a REXX program that will allow you to make simple calculations.

Here are the rules of how to use the program

All calculations are done in an infix manner. For example:

3 - 5

NOT:

- 3 5 OR 3 5 -

Enter in your arguments with a space in between. For example: "3 + 5", not "3+5".

Functionality

You are able to add, subtract, multiply, divide and use exponents.

add: +

subtract: -

multiply: *

divide: /

exponent: E

The calculator will take higher precedence for exponents over multiplication and division, and higher precedence for multiplication and division over addition and subtraction.

Examples

Here are some examples you can use to guid your usage of the program.

Exponents:

2 E 2 returns 4

2 E 3 returns 8

Multiplication:

3 * 2 returns 6

Division:

5 / 2 returns 2.5

Addition:

3 + 2 returns 5

Subtraction:

2 - 1 returns 1

Using fractions:

2.4 + 3 returns 5.4

Make sure you use decimal format for fractions. Do not use 3/4, use .75.

Using negatives:

5 + -1 returns 4