C 語(yǔ)言 疑問(wèn)

namewr

#define FETCH_TYPE_PREFETCH 1
#define FETCH_TYPE_DEMAND   2
#define FETCH_TYPE_WRITE    4

typedef enum {
    ft_prefetch     = FETCH_TYPE_PREFETCH,
    ft_demand_read  = FETCH_TYPE_DEMAND,
    ft_demand_write = FETCH_TYPE_DEMAND | FETCH_TYPE_WRITE,
} fetch_ty

static char *fetch_type_names[] = {
    [ft_prefetch]     "prefetch",
    [ft_demand_read]  "demand read",
    [ft_demand_write] "demand write",
};
請(qǐng)問(wèn)字符串前面加的方括號(hào)和常數(shù)是什么概念啊
謝謝

nketc

c99標(biāo)準(zhǔn)中的初始化符

nketc

[index]=xxx
表示初始化第index個(gè)元素。稀疏數(shù)組常用。

nketc

回復(fù) 1# namewr


    這兒的精華貼中有介紹c99的，lz不妨一看。