初始化時，可隨意指定初始化的元素或者元素的范圍。

附gnu c 手冊。

http://www.gnu.org/software/gnu-c-manual/gnu-c-manual.html

代碼：

test.c

1 #include <stdio.h> 2 static const unsigned int boot_gdt[] __attribute__((aligned(16))) = { 3 [1] = 0x11223344, 4 [2] = 0x11223344, 5 [3 ... 10] = 0x32, 6 [15] = 0x11223344 7 }; 8 9 typedef struct { unsigned long int pte; } pte_t; 10 11 int main(void){ 12 int len = sizeof(boot_gdt)/sizeof(int) - 1; 13 printf("the len of boot_gdt is %d \n", len + 1); 14 for(int i = 0; i <= len; i++){ 15 printf("the %d data is 0x%x\n", i, boot_gdt[i]); 16 } 17 }

http://www.gnu.org/software/gnu-c-manual/gnu-c-manual.html#Initializing-Arrays?

編譯：

$ gcc -o test test.c -std=c99

運行：

$ ./test
the len of? boot_gdt is 16
the 0 data is 0x0
the 1 data is 0x11223344
the 2 data is 0x11223344
the 3 data is 0x32
the 4 data is 0x32
the 5 data is 0x32
the 6 data is 0x32
the 7 data is 0x32
the 8 data is 0x32
the 9 data is 0x32
the 10 data is 0x32
the 11 data is 0x0
the 12 data is 0x0
the 13 data is 0x0
the 14 data is 0x0
the 15 data is 0x11223344

?

轉載于:https://www.cnblogs.com/shaohef/p/3872909.html

超強干貨來襲 云風專訪：近40年碼齡，通宵達旦的技術人生

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