2 int main()
3 {
4 struct _test {
5 int a;
6 int b;
7 int c;
8 };
9
10 struct _test test;
11 test.a = 1;
12 test.b = 2;
13 test.c = 3;
14
15 printf("test.a = %d, test.b=%d, test.c=%d\n", test.a, test.b, test.c);
16
17 return 0;
18 }
(gdb) p &test.a
$1 = (int *) 0x7fffffffddb0
(gdb) p &test.b
$2 = (int *) 0x7fffffffddb4
(gdb) p &test.c
$3 = (int *) 0x7fffffffddb8
conclusion
愈前面的變數，出現在 memory 愈低的 memory address
愈後面的變數，出現在 memory 愈高的 memory address
符合 heap 由 低 address 往 高 address 的方向