懂汇编的看看，，求解释，，，万分感激！！！
#include<iostream.h>
#include<stdio.h>
void main()
{
int x;
const int a=10;
cin>>x;
switch(x)
{
case 0:
cout<<"0"<<endl;
break;
case 1:
cout<<"1"<<endl;
}
}
产生汇编语言是：
1: #include<iostream.h>
2: #include<stdio.h>
3: void main()
4: {
004127E0 push ebp
004127E1 mov ebp,esp
004127E3 sub esp,4Ch
004127E6 push ebx
004127E7 push esi
004127E8 push edi
004127E9 lea edi,[ebp-4Ch]
004127EC mov ecx,13h
004127F1 mov eax,0CCCCCCCCh
004127F6 rep stos dword ptr [edi]
5: int x;
6: const int a=10;
004127F8 mov dword ptr [ebp-8],0Ah
7: cin>>x;
004127FF lea eax,[ebp-4]
00412802 push eax
00412803 mov ecx,offset cin (00430288)
00412808 call istream::operator>> (0040d330)
8: switch(x)
9: {
0041280D mov ecx,dword ptr [ebp-4]
00412810 mov dword ptr [ebp-0Ch],ecx
00412813 cmp dword ptr [ebp-0Ch],0
00412817 je main+41h (00412821)
00412819 cmp dword ptr [ebp-0Ch],1
0041281D je main+5Eh (0041283e)
0041281F jmp main+79h (00412859)
10: case 0:
11: cout<<"0"<<endl;
00412821 push offset @ILT+15(endl) (00401014)
00412826 push offset string "0" (0042b08c)
0041282B mov ecx,offset cout (004302d8)
00412830 call ostream::operator<< (0040f8e0)
00412835 mov ecx,eax
00412837 call @ILT+5(ostream::operator<<) (0040100a)
12: break;
0041283C jmp main+79h (00412859)
13: case 1:
14: cout<<"1"<<endl;
0041283E push offset @ILT+15(endl) (00401014)
00412843 push offset string "4" (0042a10c)
00412848 mov ecx,offset cout (004302d8)
0041284D call ostream::operator<< (0040f8e0)
00412852 mov ecx,eax
00412854 call @ILT+5(ostream::operator<<) (0040100a)
15: }
16: }
00412859 pop edi
0041285A pop esi
0041285B pop ebx
0041285C add esp,4Ch
0041285F cmp ebp,esp
00412861 call __chkesp (00401070)
00412866 mov esp,ebp
00412868 pop ebp
00412869 ret
求谁能给出每一句的解释，，，不胜感激！！可以连续送分！！只求解释！！
