import 'dart:io';
void main() {
print('请输入月份(1-12):');
// 读取输入(适用于不支持空安全的环境)
String input = stdin.readLineSync();
int month = int.parse(input);
// 判断季节
switch (month) {
case 3:
case 4:
case 5:
print("春季");
break;
case 6:
case 7:
case 8:
print("夏季");
break;
case 9:
case 10:
case 11:
print("秋季");
break;
case 12:
case 1:
case 2:
print("冬季");
break;
default:
print("输入错误,请输入1到12之间的数字");
}
}