内存四区分配图
栈区 堆区 | | |----------------| | | |________________| | | | | 全局区 | | |----------------| | | | "变量" | | | |________________| | | a|0Xfff23| |_____| 代码区 |-----------------| |_________________| a的指针指向全局区 a->"变量" int main(void) { char *a = NULL; a = "变量"; printf("%#X,a:%s\n",&a, a); getchar(); return 0; } int main(void) { 00964180 push ebp 00964181 mov ebp,esp 00964183 sub esp,0D0h 00964189 push ebx 0096418A push esi 0096418B push edi 0096418C lea edi,[ebp-0D0h] 00964192 mov ecx,34h 00964197 mov eax,0CCCCCCCCh 0096419C rep stos dword ptr es:[edi] 0096419E mov eax,dword ptr [__security_cookie (0968024h)] 009641A3 xor eax,ebp 009641A5 mov dword ptr [ebp-4],eax char *a = NULL; 009641A8 mov dword ptr [a],0 a = "变量"; 009641AF mov dword ptr [a],offset string "\xb1\xe4\xc1\xbf" (0966B30h) printf("%#X,a:%s\n",&a, a); 009641B6 mov eax,dword ptr [a] printf("%#X,a:%s\n",&a, a); 009641B9 push eax 009641BA lea ecx,[a] 009641BD push ecx 009641BE push offset string "%#X,a:%s\n" (0966BDCh) 009641C3 call _printf (0961325h) 009641C8 add esp,0Ch getchar(); 009641CB mov esi,esp 009641CD call dword ptr [__imp__getchar (096916Ch)] 009641D3 cmp esi,esp 009641D5 call __RTC_CheckEsp (096111Dh) return 0; 009641DA xor eax,eax总结指针是的一个地址指向的问题
