c - C 中带数字的结构名称

Question

我是 C 新手，我正在尝试创建一个结构来管理书籍:

typedef struct bookManagement{
    char *name;
    char *author;
    char *country;
    char *genre;
    int year;
} book;

如何创建带有数字的结构名称，例如:

main(){
book 1={"The great Gatsby","F. Scott Fitzgerald","USA","novel",1925};
}

我的 IDE 报告了此语句的错误:

"[Error] expected identifier or '(' before numeric constant"

Answer 1

来自 Kernighan 和 Ritchie 的《C 编程语言》，第 35 页:

There are some restrictions on the names of variables and symbolic constants. Names are made up of letters and digits; the first character must be a letter.

所以你想要的是这样的:

typedef struct bookManagement{
    char *name;
    char *author;
    char *country;
    char *genre;
    int year;
} book;

int main(){
    book book1={"The great Gatsby","F. Scott Fitzgerald","USA","novel",1925};
}

如果你想对数字进行某种索引，我想你会想要使用结构数组。如果您需要更多信息，我建议您阅读 this guide因为它为可以完成的方法提供了一些不同的选项。祝学习顺利!