CODEWITHSUNDEEP
ruby
SG17
SG17

Reputation: 41

Calculation method in ruby

I need to write a calculate method that takes three parameters: an integer, an operator string (example: "+"), and another integer. The method should execute the operation and return the result, an integer. The method should be able to handle the +, -, *, and / operations. For example, calculate(4, '+', 5) should return 9.

I think the method should be something like this:

def calculator(a,'b',c)
     a.to_i b.to_s c.to_i
end


p calculator(4,'+',5)

I keep getting error messages. Please advise on how to call a different operator to complete this.

Upvotes: 0

Views: 1819

Answers (2)

arseniyandru
arseniyandru

Reputation: 798

You should read about what is method signature and what is switch statement.
If you don't want to bother with understanding you can use ruby send method.

EDIT: How to define method in Ruby

Upvotes: -2

spickermann
spickermann

Reputation: 106802

Perhaps something like:

def calculator(a, operation, b)
  a.send(operation, b)
end

calculator(1, '+', 3)
#=> 4
calculator(3, '*', 2)
#=> 6

Upvotes: 6

Related Questions