If Statements- Bloc Checkpoint

And_ Or

Specs
LOCK METHOD
The lock method should take four arguments:

def lock(a,b,c,d)
end
Each argument represents a number on a combination lock. The method will return "unlocked" or "locked", depending on whether the combination is correct. There are several combinations that are "correct".

The first number has to be a 3, 5, or 7
The second number has to be a 2
The third number has to be a 5 or a 6
The fourth number has to be 8, 9 or 0
We could test the first condition like so:

if (a == 3 || a == 5 || a == 7)

describe "lock" do
  it "should return unlocked for 3258" do
    expect( lock(3, 2, 5, 8) ).to eq('unlocked')
  end
  it "should return locked for 1111" do
    expect( lock(1, 1, 1, 1) ).to eq('locked')
  end
  it "should return locked for 3111" do
    expect( lock(3, 1, 1, 1) ).to eq('locked')
  end
  it "should return unlocked for other valid combinations" do
    expect( lock(3, 2, 5, 8) ).to eq('unlocked')
    expect( lock(5, 2, 5, 0) ).to eq('unlocked')
    expect( lock(5, 2, 6, 8) ).to eq('unlocked')
    expect( lock(7, 2, 5, 8) ).to eq('unlocked')
    expect( lock(7, 2, 6, 9) ).to eq('unlocked')
  end
end
CORRECT CODE:
def lock(a, b, c, d)
  if (a == 3 || a == 5 || a == 7)
    "unlocked"
  end
    if (b == 2)
      "unlocked"
    end
      if (c == 5 || c == 6)
        "unlocked"
      end
        if (d == 8 || d == 9 || d == 0)
          "unlocked"
        else 
          "locked"
   end
end

lock(3, 2, 5, 8) 
lock(1, 1, 1, 1) 
lock(3, 1, 1, 1) 
lock(5, 2, 5, 0) 
lock(5, 2, 6, 8) 
lock(7, 2, 5, 8) 
RESULTS
lock should return unlocked for 3258
lock should return locked for 1111
lock should return locked for 3111
lock should return unlocked for other valid combinations

Can-I-Get? Method
The can_i_get? method should take two arguments:

def can_i_get?(item,money)
end
The first argument is a string representing what the user wants to buy.

According to the specs below, the user can buy a computer or iPad.

The second argument is a number representing how much money the purchaser has. The method should evaluate if she has enough money to buy a computer or iPad -- returning true if so, and false if not. An example for the first condition could be:

if item == "computer" && money >= 1000
Try to use elsif rather than separate if statements.

describe "can_i_get?" do
  it "returns true if user wants a computer and has $1,000" do
    expect( can_i_get?("computer", 1100) ).to eq(true)
  end
  it "returns false for a computer if they don't have $1,000" do
    expect( can_i_get?("computer", 900) ).to eq(false)
  end
  it "returns true for a iPad if they have $500" do
    expect( can_i_get?("iPad", 500) ).to eq(true)
  end
  it "returns false for a iPad if they have less than $500" do
    expect( can_i_get?("iPad", 499) ).to eq(false)
  end
end
CORRECT CODE:
def can_i_get?(item, money)
  if item == "computer" && money >= 1000
    true
  elsif item == "computer" && money < 1000
    false
  elsif item == "iPad" && money >= 500
    true
  elsif item == "iPad" && money < 500
    false
  end
end
    
    can_i_get?("computer", 1100)
    can_i_get?("computer", 900)
    can_i_get?("iPad", 500)
    can_i_get?("iPad", 499)
RESULTS

can_i_get? returns true if user wants a computer and has $1,000
can_i_get? returns false for a computer if they don't have $1,000
can_i_get? returns true for a iPad if they have $500
can_i_get? returns false for a iPad if they have less than $500

If Statements

Specs
describe "favorite_number" do
  it "should return 'Too low' if the guess is low" do
    expect( favorite_number(10, 1) ).to eq("Too low")
  end
  it "should return 'Too high' if the guess is high" do
    expect( favorite_number(5, 11) ).to eq("Too high")
  end
  it "should return 'You got it!' if the guess is right" do
    expect( favorite_number(11, 11) ).to eq("You got it!")
  end
end

def favorite_number(fav, guess)
end
The favorite_number method should:

return "Too high" if guess is greater than fav
return "Too low" if guess is less than fav
return "You got it!" if guess is equal to fav

IF STATEMENT - correct code
def favorite_number(fav, guess)
  if guess < fav
    "Too low"
    elsif guess > fav
      "Too high"
  elsif guess == fav
      "You got it!"
    end
end

favorite_number(10, 1)
favorite_number(5, 11)
favorite_number(11, 11)