print("Enter a number: ")
x = gets.chomp.to_i
print("Enter another number: ")
y = gets.chomp.to_i
print("Enter another number: ")
z = gets.chomp.to_i

smallest = x
if(y < smallest)
 smallest = y
end

if(z < smallest)
 smallest = z
end

print("\nThe smallest of the three numbers is #{smallest}.\n")