Question

是否可以将现有结构设为数组？

struct violation v1={"AA1", "Defective_Brakes", 150};
struct violation v2={"AA2", "Disregarding_Traffic_Signs", 150};
struct violation v3={"AA3", "Driving_Under_the_Influence_of_Liquor", 2000};
struct violation v4={"AA4", "Driving_while_using_Mobile_Devices", 200};
struct violation v5={"AA5", "Drinving_without_License", 750};
struct violation v6={"AA6", "Driving_Against_Traffic", 2000};
struct violation v7={"AA7", "Failure_to_use_Seatbelt", 500};
struct violation v8={"AA8", "Illegal_Parking", 200};
struct violation v9={"AA9", "Overspeeding", 1200};
struct violation v10={"AA10", "Reckless_Driving", 750};

这应该是我的代码的数据库。我想把它变成一个数组，使数据库中的搜索更容易。我该怎么办？

Answer 1

数组是同源的，即它只能保存一次，就像数组中的所有元素都是整数或字符串一样，但你不能混合你可以使用结构的类型，我在你的例子中看到你同时拥有String和Integer因此，如果您想将结构更改为数组，则必须将它们全部转换为字符串。

另外考虑你的情况，我会建议你继续使用结构，因为它混合了数据类型。您还可以使用struct violation violations [n];将所有这些结构存储在一个数组中，然后使用for循环来填充违规行为，请按照How do you make an array of structs in C?获取完整示例。

Answer 2

是。就像您对常规数组所做的那样，您可以创建一个struct s：

的数组

struct violation v[10]={
                    {"AA1",  "Defective_Brakes",                      150},
                    {"AA2",  "Disregarding_Traffic_Signs",            150},
                    {"AA3",  "Driving_Under_the_Influence_of_Liquor", 2000},
                    {"AA4",  "Driving_while_using_Mobile_Devices",    200},
                    {"AA5",  "Drinving_without_License",              750},
                    {"AA6",  "Driving_Against_Traffic",               2000},
                    {"AA7",  "Failure_to_use_Seatbelt",               500},
                    {"AA8",  "Illegal_Parking",                       200},
                    {"AA9",  "Overspeeding",                          1200},
                    {"AA10", "Reckless_Driving",                      750},
                 };

Answer 3

您可以轻松地将数据放入数组中，而不是十个单独的变量：

struct violation violations[] = {
    {"AA1", "Defective_Brakes", 150},
    {"AA2", "Disregarding_Traffic_Signs", 150},
    {"AA3", "Driving_Under_the_Influence_of_Liquor", 2000},
    {"AA4", "Driving_while_using_Mobile_Devices", 200},
    {"AA5", "Drinving_without_License", 750},
    {"AA6", "Driving_Against_Traffic", 2000},
    {"AA7", "Failure_to_use_Seatbelt", 500},
    {"AA8", "Illegal_Parking", 200},
    {"AA9", "Overspeeding", 1200},
    {"AA10", "Reckless_Driving", 750}
};

C语言：结构和数组

3 个答案: