有关C语言运算符优先级和结合律的思考

（1） b=*p++;
（2）b=(*p)++;
（3）b=++*p;
（4）b=++(*p);
（5）b=*++p;
（6）b=*(++p);

上面6式子，哪些是等价的？

反汇编代码：

b=*p++;00411BD9  mov         eax,dword ptr [p] 00411BDC  mov         ecx,dword ptr [eax] 00411BDE  mov         dword ptr [b],ecx 00411BE1  mov         edx,dword ptr [p] 00411BE4  add         edx,4 00411BE7  mov         dword ptr [p],edx     b=(*p)++;00411BEA  mov         eax,dword ptr [p] 00411BED  mov         ecx,dword ptr [eax] 00411BEF  mov         dword ptr [b],ecx 00411BF2  mov         edx,dword ptr [p] 00411BF5  mov         eax,dword ptr [edx] 00411BF7  add         eax,1 00411BFA  mov         ecx,dword ptr [p] 00411BFD  mov         dword ptr [ecx],eax     b=++*p;00411BFF  mov         eax,dword ptr [p] 00411C02  mov         ecx,dword ptr [eax] 00411C04  add         ecx,1 00411C07  mov         edx,dword ptr [p] 00411C0A  mov         dword ptr [edx],ecx 00411C0C  mov         eax,dword ptr [p] 00411C0F  mov         ecx,dword ptr [eax] 00411C11  mov         dword ptr [b],ecx     b=++(*p);00411C14  mov         eax,dword ptr [p] 00411C17  mov         ecx,dword ptr [eax] 00411C19  add         ecx,1 00411C1C  mov         edx,dword ptr [p] 00411C1F  mov         dword ptr [edx],ecx 00411C21  mov         eax,dword ptr [p] 00411C24  mov         ecx,dword ptr [eax] 00411C26  mov         dword ptr [b],ecx     b=*++p;00411C29  mov         eax,dword ptr [p] 00411C2C  add         eax,4 00411C2F  mov         dword ptr [p],eax 00411C32  mov         ecx,dword ptr [p] 00411C35  mov         edx,dword ptr [ecx] 00411C37  mov         dword ptr [b],edx     b=*(++p);00411C3A  mov         eax,dword ptr [p] 00411C3D  add         eax,4 00411C40  mov         dword ptr [p],eax 00411C43  mov         ecx,dword ptr [p] 00411C46  mov         edx,dword ptr [ecx] 00411C48  mov         dword ptr [b],edx