a=a+(a++);

013913BC  mov         eax,dword ptr [a]

013913BF  add         eax,dword ptr [a]

013913C2  mov         dword ptr [a],eax

013913C5  mov         ecx,dword ptr [a]

013913C8  add         ecx,

013913CB  mov         dword ptr [a],ecx  

    b=b+(++b);

013913CE  mov         eax,dword ptr [b]

013913D1  add         eax,

013913D4  mov         dword ptr [b],eax

013913D7  mov         ecx,dword ptr [b]

013913DA  add         ecx,dword ptr [b]

013913DD  mov         dword ptr [b],ecx