puts "Input a number"
A = gets.try(&.to_i) || 0
puts "Ok now another number"
B = gets.try(&.to_i) || 0
def main
puts "Value of multiplication is #{A} * #{B}, Which equals = #{A * B}"
puts "Value of addition is #{A} + #{B}, Which equals = #{A + B}"
puts "Value of division is #{A} / #{B}, Which equals = #{A / B}"
puts "Value of minus is #{A} - #{B}, Which equals = #{A - B}"
puts "Value of modulus is #{A} % #{B}, Which equals = #{A % B}"
end
main
我想知道Crystal中从整数获取用户输入的最简单方法是什么?类似于Ruby的gets.chomp.to_i