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## Ruby Math Game

Created this Ruby program some time ago while I was trying to learn the language. Always wanted to create one of these math games. The game is, of course, very basic, but I thought I’d share. No harm done, right?

So here it is.

=begin Simple math game to practice addition, subtraction and multiplication. =end #Ask how many times it's going to be run print("Welcome to this basic math program!") print("\nFirst of all, what type of problems would you like to receive? \n1 = Addition\n2 = Subtraction\n3 = Multiplication\n4 = Random\n") choice = gets.to_i #gets returns a String. Ruby never autoconverts to Integer, so to_i does that. firstchoice = choice #necessary to have the random choice carried out properly print("And how many problems do you wish to receive? ") rounds = gets.to_i #gets returns a String. Ruby never autoconverts to Integer, so to_i does that. #Defining the values to be factored into the questions addminusmax = 50 #The max number of add and minus calcs factormax = 12 #The max number of factor try = nil while rounds > 0 #Defining and resetting variables if firstchoice == 4 #if the choice is 4, from now on, keep looping the random numbers for each round choice = 1 + rand(3) #the 1 + thing makes it a random draw from 1 to 3 instead of 0 to 3 end ctries = 0 #default try count aaddminus = rand(addminusmax) baddminus = rand(addminusmax) cfactormax = 1 + rand(factormax) dfactormax = 1 + rand(factormax) #Asking the questions if choice == 1 result = aaddminus + baddminus puts "What is the result of #{aaddminus} + #{baddminus}?" elsif choice == 2 result = aaddminus - baddminus puts "What is the result of #{aaddminus} - #{baddminus}?" elsif choice == 3 result = cfactormax * dfactormax puts "What is the result of #{cfactormax} * #{dfactormax}?" end #This section is to check the answers while try != result try = gets.to_i #gets returns a String. Ruby never autoconverts to Integer, so to_i does that. ctries+=1 if (try < result) puts "Incorrect. Try again! Hint: it's bigger..." elsif (try > result) puts "Incorect. Try again! Hint: it's smaller..." end if try == result #if answer is correct if ctries > 1 #formulate the right answer print "Answer #{result} is correct! And you did it in #{ctries} tries!\n\n" else print "Answer #{result} is correct! And you did it in just #{ctries} try!\n\n" end end end rounds -= 1 end

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