Question

我对Ruby中的if else循环有疑问。这是代码

print "Enter your age: "
age = gets.chomp.to_i

print "Enter your sex(M/m/F/f) : "
sex = gets.upcase

if (sex == "M" and age > 21)
  puts "Hi dude. You may enter."
elsif(sex == "F" and age > 18)
  puts "Hi dudette. You may enter."
elsif (sex == "M" and age < 21)
  puts "Hi dude. You may not enter."
elsif(sex == "F" and age < 18)
  puts "Hi dudette. You may not enter."
else
  puts age
  puts sex
  puts "I do not recognize that sex. Enter only M, m, F, or f."
end

当我输入输入时，无论我输入什么，它只会进入else循环部分。我已经打印出2个变量年龄和性别进行仔细检查，它们符合我列出的条件。那么我的变量存在问题，还是我的if else条件？

Answer 1

你忘了将chomp添加到性别部分

print "Enter your age: "
age = gets.chomp.to_i

print "Enter your sex(M/m/F/f) : "
sex = gets.chomp.upcase

if (sex == "M" and age > 21)
  puts "Hi dude. You may enter."
elsif(sex == "F" and age > 18)
  puts "Hi dudette. You may enter."
elsif (sex == "M" and age < 21)
  puts "Hi dude. You may not enter."
elsif(sex == "F" and age < 18)
  puts "Hi dudette. You may not enter."
else
  puts age
  puts sex
  puts "I do not recognize that sex. Enter only M, m, F, or f."
end

这有效

Ruby if else条件比较

1 个答案: