emmanuelu17 / s-expression-calculator

S-Expression Calculator

This is a simple calculator that takes a single argument as an expression and prints out the integer result of evaluating it

Some examples are: Integers:

• INPUT: 123
• OUTPUT: 123

Add:

• INPUT: (add 1 1)

• OUTPUT: 2

• INPUT: (add 0 (add 3 4))

• OUTPUT: 7

• INPUT: (add 3 (add (add 3 3) 3))

• OUTPUT: 12

Multiply:

• INPUT: (multiply 1 1)

• OUTPUT: 1

• INPUT: (multiply 0 (multiply 3 4))

• OUTPUT: 1

• INPUT: (multiply 2 (multiply 3 4))

• OUTPUT: 24

• INPUT: (multiply 3 (multiply (multiply 3 3) 3))

• OUTPUT: 81

Exponent:

• INPUT: (exponent 2 5)
• OUTPUT: 32

Mix and Match:

• INPUT: (add 1 (multiply 2 3))

• OUTPUT: 7

• INPUT: (multiply 2 (add (multiply 2 3) 8))

• OUTPUT: 28

• (add 1 2 3 4 (multiply 2 3 5))

• OUTPUT: 40