/in/foo.c:1:1: warning: data definition has no type or storage class
 weight = float(input("请输入包裹重量（单位千克）："))
 ^~~~~~
/in/foo.c:1:1: warning: type defaults to 'int' in declaration of 'weight' [-Wimplicit-int]
/in/foo.c:1:10: error: expected expression before 'float'
 weight = float(input("请输入包裹重量（单位千克）："))
          ^~~~~
/in/foo.c:3:3: error: invalid preprocessing directive #�
 # 计算快递费用
   ^
/in/foo.c:4:28: error: stray '#' in program
 first_weight_price = 15.0  # 首重价格
                            ^
/in/foo.c:4:30: error: stray '\351' in program
 first_weight_price = 15.0  # 首重价格
                              ^
/in/foo.c:4:31: error: stray '\246' in program
 first_weight_price = 15.0  # 首重价格
                               ^
/in/foo.c:4:32: error: stray '\226' in program
 first_weight_price = 15.0  # 首重价格
                                ^
/in/foo.c:4:33: error: stray '\351' in program
 first_weight_price = 15.0  # 首重价格
                                 ^
/in/foo.c:4:34: error: stray '\207' in program
 first_weight_price = 15.0  # 首重价格
                                  ^
/in/foo.c:4:35: error: stray '\215' in program
 first_weight_price = 15.0  # 首重价格
                                   ^
/in/foo.c:4:36: error: stray '\344' in program
 first_weight_price = 15.0  # 首重价格
                                    ^
/in/foo.c:4:37: error: stray '\273' in program
 first_weight_price = 15.0  # 首重价格
                                     ^
/in/foo.c:4:38: error: stray '\267' in program
 first_weight_price = 15.0  # 首重价格
                                      ^
/in/foo.c:4:39: error: stray '\346' in program
 first_weight_price = 15.0  # 首重价格
                                       ^
/in/foo.c:4:40: error: stray '\240' in program
 first_weight_price = 15.0  # 首重价格
                                        ^
/in/foo.c:4:41: error: stray '\274' in program
 first_weight_price = 15.0  # 首重价格
                                         ^
/in/foo.c:5:33: error: stray '#' in program
 additional_weight_price = 10.0  # 续重价格
                                 ^
/in/foo.c:5:35: error: stray '\347' in program
 additional_weight_price = 10.0  # 续重价格
                                   ^
/in/foo.c:5:36: error: stray '\273' in program
 additional_weight_price = 10.0  # 续重价格
                                    ^
/in/foo.c:5:37: error: stray '\255' in program
 additional_weight_price = 10.0  # 续重价格
                                     ^
/in/foo.c:5:38: error: stray '\351' in program
 additional_weight_price = 10.0  # 续重价格
                                      ^
/in/foo.c:5:39: error: stray '\207' in program
 additional_weight_price = 10.0  # 续重价格
                                       ^
/in/foo.c:5:40: error: stray '\215' in program
 additional_weight_price = 10.0  # 续重价格
                                        ^
/in/foo.c:5:41: error: stray '\344' in program
 additional_weight_price = 10.0  # 续重价格
                                         ^
/in/foo.c:5:42: error: stray '\273' in program
 additional_weight_price = 10.0  # 续重价格
                                          ^
/in/foo.c:5:43: error: stray '\267' in program
 additional_weight_price = 10.0  # 续重价格
                                           ^
/in/foo.c:5:44: error: stray '\346' in program
 additional_weight_price = 10.0  # 续重价格
                                            ^
/in/foo.c:5:45: error: stray '\240' in program
 additional_weight_price = 10.0  # 续重价格
                                             ^
/in/foo.c:5:46: error: stray '\274' in program
 additional_weight_price = 10.0  # 续重价格
                                              ^
/in/foo.c:6:29: error: stray '#' in program
 discount_threshold = 100.0  # 折扣阈值
                             ^
/in/foo.c:6:31: error: stray '\346' in program
 discount_threshold = 100.0  # 折扣阈值
                               ^
/in/foo.c:6:32: error: stray '\212' in program
 discount_threshold = 100.0  # 折扣阈值
                                ^
/in/foo.c:6:33: error: stray '\230' in program
 discount_threshold = 100.0  # 折扣阈值
                                 ^
/in/foo.c:6:34: error: stray '\346' in program
 discount_threshold = 100.0  # 折扣阈值
                                  ^
/in/foo.c:6:35: error: stray '\211' in program
 discount_threshold = 100.0  # 折扣阈值
                                   ^
/in/foo.c:6:36: error: stray '\243' in program
 discount_threshold = 100.0  # 折扣阈值
                                    ^
/in/foo.c:6:37: error: stray '\351' in program
 discount_threshold = 100.0  # 折扣阈值
                                     ^
/in/foo.c:6:38: error: stray '\230' in program
 discount_threshold = 100.0  # 折扣阈值
                                      ^
/in/foo.c:6:39: error: stray '\210' in program
 discount_threshold = 100.0  # 折扣阈值
                                       ^
/in/foo.c:6:40: error: stray '\345' in program
 discount_threshold = 100.0  # 折扣阈值
                                        ^
/in/foo.c:6:41: error: stray '\200' in program
 discount_threshold = 100.0  # 折扣阈值
                                         ^
/in/foo.c:6:42: error: stray '\274' in program
 discount_threshold = 100.0  # 折扣阈值
                                          ^
/in/foo.c:7:22: error: stray '#' in program
 discount_rate = 0.9  # 折扣率
                      ^
/in/foo.c:7:24: error: stray '\346' in program
 discount_rate = 0.9  # 折扣率
                        ^
/in/foo.c:7:25: error: stray '\212' in program
 discount_rate = 0.9  # 折扣率
                         ^
/in/foo.c:7:26: error: stray '\230' in program
 discount_rate = 0.9  # 折扣率
                          ^
/in/foo.c:7:27: error: stray '\346' in program
 discount_rate = 0.9  # 折扣率
                           ^
/in/foo.c:7:28: error: stray '\211' in program
 discount_rate = 0.9  # 折扣率
                            ^
/in/foo.c:7:29: error: stray '\243' in program
 discount_rate = 0.9  # 折扣率
                             ^
/in/foo.c:7:30: error: stray '\347' in program
 discount_rate = 0.9  # 折扣率
                              ^
/in/foo.c:7:31: error: stray '\216' in program
 discount_rate = 0.9  # 折扣率
                               ^
/in/foo.c:7:32: error: stray '\207' in program
 discount_rate = 0.9  # 折扣率
                                ^
/in/foo.c:9:3: error: invalid preprocessing directive #�
 # 计算费用
   ^
/in/foo.c:15:3: error: invalid preprocessing directive #�
 # 判断是否享受折扣
   ^
/in/foo.c:19:3: error: invalid preprocessing directive #�
 # 输出结果，保留两位小数
   ^