chapter1.4.3

// chapter1.4.3.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include<iostream>


int _tmain(int argc, _TCHAR* argv[])
{
 std::cout<<"Enter two numbers:"<<std::endl;
 int v1,v2;
 std::cin>>v1>>v2;
 int lower,upper;
 if(v1<=v2)
 {
  lower=v1;
  upper=v2;
 }else
 {
  lower=v2;
  upper=v1;
 }
 int sum=0;
 for(int val=lower;val<=upper;++val)
 {
  sum+=val;
 }
 std::cout<<"Sum of "<<lower
  <<" to "<<upper
  << " inclusive is "
  << sum<<std::endl;
 return 0;
}

 

debug

od

 

004114C0    55              push    ebp
004114C1    8BEC            mov     ebp, esp
004114C3    81EC 0C010000   sub     esp, 10C
004114C9    53              push    ebx
004114CA    56              push    esi
004114CB    57              push    edi
004114CC    8DBD F4FEFFFF   lea     edi, dword ptr [ebp-10C]
004114D2    B9 43000000     mov     ecx, 43
004114D7    B8 CCCCCCCC     mov     eax, CCCCCCCC
004114DC    F3:AB           rep     stos dword ptr es:[edi]
004114DE    8BF4            mov     esi, esp
004114E0    A1 18A34100     mov     eax, dword ptr [<&MSVCP90D.std::>
004114E5    50              push    eax
004114E6    68 28784100     push    00417828                         ; ASCII "Enter two numbers:"
004114EB    8B0D 14A34100   mov     ecx, dword ptr [<&MSVCP90D.std::>; MSVCP90D.std::cout
004114F1    51              push    ecx
004114F2    E8 6CFCFFFF     call    00411163
004114F7    83C4 08         add     esp, 8
004114FA    8BC8            mov     ecx, eax
004114FC    FF15 10A34100   call    dword ptr [<&MSVCP90D.std::basic>; MSVCP90D.std::basic_ostream<wchar_t,std::char_traits<wchar_t> >::operator<<
00411502    3BF4            cmp     esi, esp
00411504    E8 AAFCFFFF     call    004111B3
00411509    8BF4            mov     esi, esp
0041150B    8D45 EC         lea     eax, dword ptr [ebp-14]
0041150E    50              push    eax
0041150F    8BFC            mov     edi, esp
00411511    8D4D F8         lea     ecx, dword ptr [ebp-8]
00411514    51              push    ecx
00411515    8B0D 0CA34100   mov     ecx, dword ptr [<&MSVCP90D.std::>; MSVCP90D.std::cin
0041151B    FF15 08A34100   call    dword ptr [<&MSVCP90D.std::basic>; MSVCP90D.std::basic_istream<char,std::char_traits<char> >::operator>>
00411521    3BFC            cmp     edi, esp
00411523    E8 8BFCFFFF     call    004111B3
00411528    8BC8            mov     ecx, eax
0041152A    FF15 08A34100   call    dword ptr [<&MSVCP90D.std::basic>; MSVCP90D.std::basic_istream<char,std::char_traits<char> >::operator>>
00411530    3BF4            cmp     esi, esp
00411532    E8 7CFCFFFF     call    004111B3
00411537    8B45 F8         mov     eax, dword ptr [ebp-8]           ; v1
0041153A    3B45 EC         cmp     eax, dword ptr [ebp-14]          ; v1<=v2
0041153D    7F 0E           jg      short 0041154D                   ; 大于
0041153F    8B45 F8         mov     eax, dword ptr [ebp-8]
00411542    8945 E0         mov     dword ptr [ebp-20], eax          ; lower=v1
00411545    8B45 EC         mov     eax, dword ptr [ebp-14]
00411548    8945 D4         mov     dword ptr [ebp-2C], eax          ; upper=v2
0041154B    EB 0C           jmp     short 00411559
0041154D    8B45 EC         mov     eax, dword ptr [ebp-14]
00411550    8945 E0         mov     dword ptr [ebp-20], eax
00411553    8B45 F8         mov     eax, dword ptr [ebp-8]
00411556    8945 D4         mov     dword ptr [ebp-2C], eax
00411559    C745 C8 0000000>mov     dword ptr [ebp-38], 0            ; val=0
00411560    8B45 E0         mov     eax, dword ptr [ebp-20]
00411563    8945 BC         mov     dword ptr [ebp-44], eax
00411566    EB 09           jmp     short 00411571
00411568    8B45 BC         mov     eax, dword ptr [ebp-44]          ; val进eax
0041156B    83C0 01         add     eax, 1                           ; ++val
0041156E    8945 BC         mov     dword ptr [ebp-44], eax          ; 保存val
00411571    8B45 BC         mov     eax, dword ptr [ebp-44]          ; val进eax
00411574    3B45 D4         cmp     eax, dword ptr [ebp-2C]          ; val<=upper
00411577    7F 0B           jg      short 00411584
00411579    8B45 C8         mov     eax, dword ptr [ebp-38]          ; sum进eax
0041157C    0345 BC         add     eax, dword ptr [ebp-44]          ; sum+=val
0041157F    8945 C8         mov     dword ptr [ebp-38], eax
00411582  ^ EB E4           jmp     short 00411568
00411584    8BF4            mov     esi, esp
00411586    A1 18A34100     mov     eax, dword ptr [<&MSVCP90D.std::>
0041158B    50              push    eax
0041158C    8BFC            mov     edi, esp
0041158E    8B4D C8         mov     ecx, dword ptr [ebp-38]          ; sum
00411591    51              push    ecx
00411592    68 14784100     push    00417814                         ; ASCII " inclusive is "
00411597    8BDC            mov     ebx, esp
00411599    8B55 D4         mov     edx, dword ptr [ebp-2C]
0041159C    52              push    edx
0041159D    68 0C784100     push    0041780C                         ; ASCII " to "
004115A2    8BC4            mov     eax, esp
004115A4    8B4D E0         mov     ecx, dword ptr [ebp-20]
004115A7    51              push    ecx
004115A8    68 00784100     push    00417800                         ; ASCII "Sum of "
004115AD    8B15 14A34100   mov     edx, dword ptr [<&MSVCP90D.std::>; MSVCP90D.std::cout
004115B3    52              push    edx
004115B4    8985 F4FEFFFF   mov     dword ptr [ebp-10C], eax
004115BA    E8 A4FBFFFF     call    00411163
004115BF    83C4 08         add     esp, 8
004115C2    8BC8            mov     ecx, eax
004115C4    FF15 04A34100   call    dword ptr [<&MSVCP90D.std::basic>; MSVCP90D.std::basic_ostream<char,std::char_traits<char> >::operator<<
004115CA    8B8D F4FEFFFF   mov     ecx, dword ptr [ebp-10C]
004115D0    3BCC            cmp     ecx, esp
004115D2    E8 DCFBFFFF     call    004111B3
004115D7    50              push    eax
004115D8    E8 86FBFFFF     call    00411163
004115DD    83C4 08         add     esp, 8
004115E0    8BC8            mov     ecx, eax
004115E2    FF15 04A34100   call    dword ptr [<&MSVCP90D.std::basic>; MSVCP90D.std::basic_ostream<char,std::char_traits<char> >::operator<<
004115E8    3BDC            cmp     ebx, esp
004115EA    E8 C4FBFFFF     call    004111B3
004115EF    50              push    eax
004115F0    E8 6EFBFFFF     call    00411163
004115F5    83C4 08         add     esp, 8
004115F8    8BC8            mov     ecx, eax
004115FA    FF15 04A34100   call    dword ptr [<&MSVCP90D.std::basic>; MSVCP90D.std::basic_ostream<char,std::char_traits<char> >::operator<<
00411600    3BFC            cmp     edi, esp
00411602    E8 ACFBFFFF     call    004111B3
00411607    8BC8            mov     ecx, eax
00411609    FF15 10A34100   call    dword ptr [<&MSVCP90D.std::basic>; MSVCP90D.std::basic_ostream<wchar_t,std::char_traits<wchar_t> >::operator<<
0041160F    3BF4            cmp     esi, esp
00411611    E8 9DFBFFFF     call    004111B3
00411616    33C0            xor     eax, eax
00411618    52              push    edx
00411619    8BCD            mov     ecx, ebp
0041161B    50              push    eax
0041161C    8D15 40164100   lea     edx, dword ptr [411640]
00411622    E8 88FAFFFF     call    004110AF
00411627    58              pop     eax
00411628    5A              pop     edx
00411629    5F              pop     edi
0041162A    5E              pop     esi
0041162B    5B              pop     ebx
0041162C    81C4 0C010000   add     esp, 10C
00411632    3BEC            cmp     ebp, esp
00411634    E8 7AFBFFFF     call    004111B3
00411639    8BE5            mov     esp, ebp
0041163B    5D              pop     ebp
0041163C    C3              retn

 

 

ida

.text:004114C0
.text:004114C0 ; =============== S U B R O U T I N E =======================================
.text:004114C0
.text:004114C0 ; Attributes: bp-based frame
.text:004114C0
.text:004114C0 _wmain          proc near               ; CODE XREF: j__wmainj
.text:004114C0
.text:004114C0 var_10C         = dword ptr -10Ch
.text:004114C0 val             = dword ptr -44h
.text:004114C0 sum             = dword ptr -38h
.text:004114C0 upper           = dword ptr -2Ch
.text:004114C0 lower           = dword ptr -20h
.text:004114C0 v2              = dword ptr -14h
.text:004114C0 v1              = dword ptr -8
.text:004114C0
.text:004114C0                 push    ebp
.text:004114C1                 mov     ebp, esp
.text:004114C3                 sub     esp, 10Ch
.text:004114C9                 push    ebx
.text:004114CA                 push    esi
.text:004114CB                 push    edi
.text:004114CC                 lea     edi, [ebp+var_10C]
.text:004114D2                 mov     ecx, 43h
.text:004114D7                 mov     eax, 0CCCCCCCCh
.text:004114DC                 rep stosd
.text:004114DE                 mov     esi, esp
.text:004114E0                 mov     eax, ds:__imp_?endl@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@1@AAV21@@Z ; std::endl(std::basic_ostream<char,std::char_traits<char>> &)
.text:004114E5                 push    eax
.text:004114E6                 push    offset aEnterTwoNumber ; "Enter two numbers:"
.text:004114EB                 mov     ecx, ds:__imp_?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A ; std::basic_ostream<char,std::char_traits<char>> std::cout
.text:004114F1                 push    ecx
.text:004114F2                 call    j_??$?6U?$char_traits@D@std@@@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z ; std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char>> &,char const *)
.text:004114F7                 add     esp, 8
.text:004114FA                 mov     ecx, eax
.text:004114FC                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@P6AAAV01@AAV01@@Z@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(std::basic_ostream<char,std::char_traits<char>> & (*)(std::basic_ostream<char,std::char_traits<char>> &))
.text:00411502                 cmp     esi, esp
.text:00411504                 call    j___RTC_CheckEsp
.text:00411509                 mov     esi, esp
.text:0041150B                 lea     eax, [ebp+v2]
.text:0041150E                 push    eax
.text:0041150F                 mov     edi, esp
.text:00411511                 lea     ecx, [ebp+v1]
.text:00411514                 push    ecx
.text:00411515                 mov     ecx, ds:__imp_?cin@std@@3V?$basic_istream@DU?$char_traits@D@std@@@1@A ; std::basic_istream<char,std::char_traits<char>> std::cin
.text:0041151B                 call    ds:__imp_??5?$basic_istream@DU?$char_traits@D@std@@@std@@QAEAAV01@AAH@Z ; std::basic_istream<char,std::char_traits<char>>::operator>>(int &)
.text:00411521                 cmp     edi, esp
.text:00411523                 call    j___RTC_CheckEsp
.text:00411528                 mov     ecx, eax
.text:0041152A                 call    ds:__imp_??5?$basic_istream@DU?$char_traits@D@std@@@std@@QAEAAV01@AAH@Z ; std::basic_istream<char,std::char_traits<char>>::operator>>(int &)
.text:00411530                 cmp     esi, esp
.text:00411532                 call    j___RTC_CheckEsp
.text:00411537                 mov     eax, [ebp+v1]
.text:0041153A                 cmp     eax, [ebp+v2]
.text:0041153D                 jg      short v1greaterv2
.text:0041153F                 mov     eax, [ebp+v1]
.text:00411542                 mov     [ebp+lower], eax
.text:00411545                 mov     eax, [ebp+v2]
.text:00411548                 mov     [ebp+upper], eax
.text:0041154B                 jmp     short loc_411559
.text:0041154D ; ---------------------------------------------------------------------------
.text:0041154D
.text:0041154D v1greaterv2:                            ; CODE XREF: _wmain+7Dj
.text:0041154D                 mov     eax, [ebp+v2]
.text:00411550                 mov     [ebp+lower], eax
.text:00411553                 mov     eax, [ebp+v1]
.text:00411556                 mov     [ebp+upper], eax
.text:00411559
.text:00411559 loc_411559:                             ; CODE XREF: _wmain+8Bj
.text:00411559                 mov     [ebp+sum], 0
.text:00411560                 mov     eax, [ebp+lower]
.text:00411563                 mov     [ebp+val], eax
.text:00411566                 jmp     short loc_411571
.text:00411568 ; ---------------------------------------------------------------------------
.text:00411568
.text:00411568 valaddone:                              ; CODE XREF: _wmain+C2j
.text:00411568                 mov     eax, [ebp+val]
.text:0041156B                 add     eax, 1
.text:0041156E                 mov     [ebp+val], eax
.text:00411571
.text:00411571 loc_411571:                             ; CODE XREF: _wmain+A6j
.text:00411571                 mov     eax, [ebp+val]
.text:00411574                 cmp     eax, [ebp+upper]
.text:00411577                 jg      short printresult
.text:00411579                 mov     eax, [ebp+sum]
.text:0041157C                 add     eax, [ebp+val]
.text:0041157F                 mov     [ebp+sum], eax
.text:00411582                 jmp     short valaddone
.text:00411584 ; ---------------------------------------------------------------------------
.text:00411584
.text:00411584 printresult:                            ; CODE XREF: _wmain+B7j
.text:00411584                 mov     esi, esp
.text:00411586                 mov     eax, ds:__imp_?endl@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@1@AAV21@@Z ; std::endl(std::basic_ostream<char,std::char_traits<char>> &)
.text:0041158B                 push    eax
.text:0041158C                 mov     edi, esp
.text:0041158E                 mov     ecx, [ebp+sum]
.text:00411591                 push    ecx
.text:00411592                 push    offset aInclusiveIs ; " inclusive is "
.text:00411597                 mov     ebx, esp
.text:00411599                 mov     edx, [ebp+upper]
.text:0041159C                 push    edx
.text:0041159D                 push    offset aTo      ; " to "
.text:004115A2                 mov     eax, esp
.text:004115A4                 mov     ecx, [ebp+lower]
.text:004115A7                 push    ecx
.text:004115A8                 push    offset aSumOf   ; "Sum of "
.text:004115AD                 mov     edx, ds:__imp_?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A ; std::basic_ostream<char,std::char_traits<char>> std::cout
.text:004115B3                 push    edx
.text:004115B4                 mov     [ebp+var_10C], eax
.text:004115BA                 call    j_??$?6U?$char_traits@D@std@@@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z ; std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char>> &,char const *)
.text:004115BF                 add     esp, 8
.text:004115C2                 mov     ecx, eax
.text:004115C4                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@H@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(int)
.text:004115CA                 mov     ecx, [ebp+var_10C]
.text:004115D0                 cmp     ecx, esp
.text:004115D2                 call    j___RTC_CheckEsp
.text:004115D7                 push    eax
.text:004115D8                 call    j_??$?6U?$char_traits@D@std@@@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z ; std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char>> &,char const *)
.text:004115DD                 add     esp, 8
.text:004115E0                 mov     ecx, eax
.text:004115E2                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@H@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(int)
.text:004115E8                 cmp     ebx, esp
.text:004115EA                 call    j___RTC_CheckEsp
.text:004115EF                 push    eax
.text:004115F0                 call    j_??$?6U?$char_traits@D@std@@@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z ; std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char>> &,char const *)
.text:004115F5                 add     esp, 8
.text:004115F8                 mov     ecx, eax
.text:004115FA                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@H@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(int)
.text:00411600                 cmp     edi, esp
.text:00411602                 call    j___RTC_CheckEsp
.text:00411607                 mov     ecx, eax
.text:00411609                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@P6AAAV01@AAV01@@Z@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(std::basic_ostream<char,std::char_traits<char>> & (*)(std::basic_ostream<char,std::char_traits<char>> &))
.text:0041160F                 cmp     esi, esp
.text:00411611                 call    j___RTC_CheckEsp
.text:00411616                 xor     eax, eax
.text:00411618                 push    edx
.text:00411619                 mov     ecx, ebp
.text:0041161B                 push    eax
.text:0041161C                 lea     edx, dword_411640
.text:00411622                 call    j_@_RTC_CheckStackVars@8 ; _RTC_CheckStackVars(x,x)
.text:00411627                 pop     eax
.text:00411628                 pop     edx
.text:00411629                 pop     edi
.text:0041162A                 pop     esi
.text:0041162B                 pop     ebx
.text:0041162C                 add     esp, 10Ch
.text:00411632                 cmp     ebp, esp
.text:00411634                 call    j___RTC_CheckEsp
.text:00411639                 mov     esp, ebp
.text:0041163B                 pop     ebp
.text:0041163C                 retn
.text:0041163C _wmain          endp
.text:0041163C
.text:0041163C ; ---------------------------------------------------------------------------
release

od

 

00401000  /$  55            push    ebp
00401001  |.  8BEC          mov     ebp, esp
00401003  |.  83E4 F8       and     esp, FFFFFFF8
00401006  |.  A1 38204000   mov     eax, dword ptr [<&MSVCP90.std::e>
0040100B  |.  83EC 08       sub     esp, 8                           ;  分配V1和V2
0040100E  |.  53            push    ebx
0040100F  |.  55            push    ebp
00401010  |.  56            push    esi
00401011  |.  57            push    edi
00401012  |.  50            push    eax
00401013  |.  51            push    ecx
00401014  |.  8B0D 44204000 mov     ecx, dword ptr [<&MSVCP90.std::c>;  MSVCP90.std::cout
0040101A  |.  68 34214000   push    00402134                         ;  ASCII "Enter two numbers:"
0040101F  |.  51            push    ecx
00401020  |.  E8 0B020000   call    00401230
00401025  |.  83C4 0C       add     esp, 0C
00401028  |.  8BC8          mov     ecx, eax
0040102A  |.  FF15 40204000 call    dword ptr [<&MSVCP90.std::basic_>;  MSVCP90.std::basic_ostream<wchar_t,std::char_traits<wchar_t> >::operator<<
00401030  |.  8B0D 48204000 mov     ecx, dword ptr [<&MSVCP90.std::c>;  MSVCP90.std::cin
00401036  |.  8D5424 14     lea     edx, dword ptr [esp+14]          ;  v2
0040103A  |.  52            push    edx
0040103B  |.  8D4424 14     lea     eax, dword ptr [esp+14]          ;  v1
0040103F  |.  50            push    eax
00401040  |.  FF15 68204000 call    dword ptr [<&MSVCP90.std::basic_>;  MSVCP90.std::basic_istream<char,std::char_traits<char> >::operator>>
00401046  |.  8BC8          mov     ecx, eax
00401048  |.  FF15 68204000 call    dword ptr [<&MSVCP90.std::basic_>;  MSVCP90.std::basic_istream<char,std::char_traits<char> >::operator>>
0040104E  |.  8B4424 10     mov     eax, dword ptr [esp+10]          ;  eax->v1
00401052  |.  8B7424 14     mov     esi, dword ptr [esp+14]          ;  esi->v2
00401056  |.  3BC6          cmp     eax, esi                         ;  v1>v2
00401058  |.  7F 04         jg      short 0040105E
0040105A  |.  8BD0          mov     edx, eax                         ;  v1<=v2;edx<-v1;lower
0040105C  |.  EB 04         jmp     short 00401062
0040105E  |>  8BD6          mov     edx, esi
00401060  |.  8BF0          mov     esi, eax
00401062  |>  33FF          xor     edi, edi
00401064  |.  33C9          xor     ecx, ecx
00401066  |.  33ED          xor     ebp, ebp                         ;  sum
00401068  |.  3BD6          cmp     edx, esi                         ;  esi:upper;edx:lower
0040106A  |.  8BC2          mov     eax, edx                         ;  edx:lower->eax
0040106C  |.  7F 29         jg      short 00401097
0040106E  |.  8BDE          mov     ebx, esi
00401070  |.  2BDA          sub     ebx, edx
00401072  |.  43            inc     ebx
00401073  |.  83FB 02       cmp     ebx, 2
00401076  |.  7C 15         jl      short 0040108D
00401078  |.  8D5E FF       lea     ebx, dword ptr [esi-1]
0040107B  |.  EB 03         jmp     short 00401080
0040107D  |   8D49 00       lea     ecx, dword ptr [ecx]
00401080  |>  03F8          /add     edi, eax                        ;  奇数相加
00401082  |.  8D4C01 01     |lea     ecx, dword ptr [ecx+eax+1]      ;  偶数相加
00401086  |.  83C0 02       |add     eax, 2
00401089  |.  3BC3          |cmp     eax, ebx
0040108B  |.^ 7E F3         \jle     short 00401080
0040108D  |>  3BC6          cmp     eax, esi
0040108F  |.  7F 02         jg      short 00401093
00401091  |.  8BE8          mov     ebp, eax
00401093  |>  03CF          add     ecx, edi                         ;  ecx为总和
00401095  |.  03E9          add     ebp, ecx                         ;  ebp为总和
00401097  |>  8B0D 38204000 mov     ecx, dword ptr [<&MSVCP90.std::e>;  MSVCP90.std::endl
0040109D  |.  51            push    ecx
0040109E  |.  55            push    ebp
0040109F  |.  68 48214000   push    00402148                         ;  ASCII " inclusive is "
004010A4  |.  56            push    esi
004010A5  |.  68 58214000   push    00402158                         ;  ASCII " to "
004010AA  |.  52            push    edx
004010AB  |.  8B15 44204000 mov     edx, dword ptr [<&MSVCP90.std::c>;  MSVCP90.std::cout
004010B1  |.  68 60214000   push    00402160                         ;  ASCII "Sum of "
004010B6  |.  52            push    edx
004010B7  |.  E8 74010000   call    00401230
004010BC  |.  83C4 08       add     esp, 8
004010BF  |.  8BC8          mov     ecx, eax
004010C1  |.  FF15 5C204000 call    dword ptr [<&MSVCP90.std::basic_>;  MSVCP90.std::basic_ostream<char,std::char_traits<char> >::operator<<
004010C7  |.  50            push    eax
004010C8  |.  E8 63010000   call    00401230
004010CD  |.  83C4 08       add     esp, 8
004010D0  |.  8BC8          mov     ecx, eax
004010D2  |.  FF15 5C204000 call    dword ptr [<&MSVCP90.std::basic_>;  MSVCP90.std::basic_ostream<char,std::char_traits<char> >::operator<<
004010D8  |.  50            push    eax
004010D9  |.  E8 52010000   call    00401230
004010DE  |.  83C4 08       add     esp, 8
004010E1  |.  8BC8          mov     ecx, eax
004010E3  |.  FF15 5C204000 call    dword ptr [<&MSVCP90.std::basic_>;  MSVCP90.std::basic_ostream<char,std::char_traits<char> >::operator<<
004010E9  |.  8BC8          mov     ecx, eax
004010EB  |.  FF15 40204000 call    dword ptr [<&MSVCP90.std::basic_>;  MSVCP90.std::basic_ostream<wchar_t,std::char_traits<wchar_t> >::operator<<
004010F1  |.  5F            pop     edi
004010F2  |.  33C0          xor     eax, eax
004010F4  |.  5E            pop     esi
004010F5  |.  5D            pop     ebp
004010F6  |.  5B            pop     ebx
004010F7  |.  8BE5          mov     esp, ebp
004010F9  |.  5D            pop     ebp
004010FA  \.  C3            retn

 

 

ida

.text:00401000
.text:00401000 ; =============== S U B R O U T I N E =======================================
.text:00401000
.text:00401000 ; Attributes: bp-based frame
.text:00401000
.text:00401000 ; int __cdecl main(int argc, const char **argv, const char *envp)
.text:00401000 _main           proc near               ; CODE XREF: ___tmainCRTStartup+10Ap
.text:00401000
.text:00401000 v1              = dword ptr -8
.text:00401000 v2              = dword ptr -4
.text:00401000 argc            = dword ptr  8
.text:00401000 argv            = dword ptr  0Ch
.text:00401000 envp            = dword ptr  10h
.text:00401000
.text:00401000                 push    ebp
.text:00401001                 mov     ebp, esp
.text:00401003                 and     esp, 0FFFFFFF8h
.text:00401006                 mov     eax, ds:__imp_?endl@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@1@AAV21@@Z ; std::endl(std::basic_ostream<char,std::char_traits<char>> &)
.text:0040100B                 sub     esp, 8          ; 分配v1 v2
.text:0040100E                 push    ebx
.text:0040100F                 push    ebp
.text:00401010                 push    esi
.text:00401011                 push    edi
.text:00401012                 push    eax
.text:00401013                 push    ecx
.text:00401014                 mov     ecx, ds:__imp_?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A ; std::basic_ostream<char,std::char_traits<char>> std::cout
.text:0040101A                 push    offset aEnterTwoNumber ; "Enter two numbers:"
.text:0040101F                 push    ecx
.text:00401020                 call    ??$?6U?$char_traits@D@std@@@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z ; std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char>> &,char const *)
.text:00401025                 add     esp, 0Ch
.text:00401028                 mov     ecx, eax
.text:0040102A                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@P6AAAV01@AAV01@@Z@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(std::basic_ostream<char,std::char_traits<char>> & (*)(std::basic_ostream<char,std::char_traits<char>> &))
.text:00401030                 mov     ecx, ds:__imp_?cin@std@@3V?$basic_istream@DU?$char_traits@D@std@@@1@A ; std::basic_istream<char,std::char_traits<char>> std::cin
.text:00401036                 lea     edx, [esp+18h+v2]
.text:0040103A                 push    edx
.text:0040103B                 lea     eax, [esp+1Ch+v1]
.text:0040103F                 push    eax
.text:00401040                 call    ds:__imp_??5?$basic_istream@DU?$char_traits@D@std@@@std@@QAEAAV01@AAH@Z ; std::basic_istream<char,std::char_traits<char>>::operator>>(int &)
.text:00401046                 mov     ecx, eax
.text:00401048                 call    ds:__imp_??5?$basic_istream@DU?$char_traits@D@std@@@std@@QAEAAV01@AAH@Z ; std::basic_istream<char,std::char_traits<char>>::operator>>(int &)
.text:0040104E                 mov     eax, [esp+18h+v1]
.text:00401052                 mov     esi, [esp+18h+v2]
.text:00401056                 cmp     eax, esi
.text:00401058                 jg      short v1greaterv2
.text:0040105A                 mov     edx, eax
.text:0040105C                 jmp     short loc_401062 ; 奇数和
.text:0040105E ; ---------------------------------------------------------------------------
.text:0040105E
.text:0040105E v1greaterv2:                            ; CODE XREF: _main+58j
.text:0040105E                 mov     edx, esi
.text:00401060                 mov     esi, eax
.text:00401062
.text:00401062 loc_401062:                             ; CODE XREF: _main+5Cj
.text:00401062                 xor     edi, edi        ; 奇数和
.text:00401064                 xor     ecx, ecx        ; 偶数和
.text:00401066                 xor     ebp, ebp        ; sum
.text:00401068                 cmp     edx, esi        ; lower>upper
.text:0040106A                 mov     eax, edx        ; eax:lower
.text:0040106C                 jg      short printresult
.text:0040106E                 mov     ebx, esi
.text:00401070                 sub     ebx, edx
.text:00401072                 inc     ebx
.text:00401073                 cmp     ebx, 2
.text:00401076                 jl      short loc_40108D
.text:00401078                 lea     ebx, [esi-1]
.text:0040107B                 jmp     short loc_401080 ; edx为奇数和
.text:0040107B ; ---------------------------------------------------------------------------
.text:0040107D                 align 10h
.text:00401080
.text:00401080 loc_401080:                             ; CODE XREF: _main+7Bj
.text:00401080                                         ; _main+8Bj
.text:00401080                 add     edi, eax        ; edx为奇数和
.text:00401082                 lea     ecx, [ecx+eax+1] ; ecx为偶数和
.text:00401086                 add     eax, 2          ; eax为下一个奇数
.text:00401089                 cmp     eax, ebx        ; 大于uppper
.text:0040108B                 jle     short loc_401080 ; edx为奇数和
.text:0040108D
.text:0040108D loc_40108D:                             ; CODE XREF: _main+76j
.text:0040108D                 cmp     eax, esi
.text:0040108F                 jg      short loc_401093 ; 奇数和偶数相加
.text:00401091                 mov     ebp, eax
.text:00401093
.text:00401093 loc_401093:                             ; CODE XREF: _main+8Fj
.text:00401093                 add     ecx, edi        ; 奇数和偶数相加
.text:00401095                 add     ebp, ecx
.text:00401097
.text:00401097 printresult:                            ; CODE XREF: _main+6Cj
.text:00401097                 mov     ecx, ds:__imp_?endl@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@1@AAV21@@Z ; std::endl(std::basic_ostream<char,std::char_traits<char>> &)
.text:0040109D                 push    ecx
.text:0040109E                 push    ebp             ; 总和
.text:0040109F                 push    offset aInclusiveIs ; " inclusive is "
.text:004010A4                 push    esi
.text:004010A5                 push    offset aTo      ; " to "
.text:004010AA                 push    edx
.text:004010AB                 mov     edx, ds:__imp_?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A ; std::basic_ostream<char,std::char_traits<char>> std::cout
.text:004010B1                 push    offset aSumOf   ; "Sum of "
.text:004010B6                 push    edx
.text:004010B7                 call    ??$?6U?$char_traits@D@std@@@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z ; std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char>> &,char const *)
.text:004010BC                 add     esp, 8
.text:004010BF                 mov     ecx, eax
.text:004010C1                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@H@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(int)
.text:004010C7                 push    eax
.text:004010C8                 call    ??$?6U?$char_traits@D@std@@@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z ; std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char>> &,char const *)
.text:004010CD                 add     esp, 8
.text:004010D0                 mov     ecx, eax
.text:004010D2                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@H@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(int)
.text:004010D8                 push    eax
.text:004010D9                 call    ??$?6U?$char_traits@D@std@@@std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z ; std::operator<<<std::char_traits<char>>(std::basic_ostream<char,std::char_traits<char>> &,char const *)
.text:004010DE                 add     esp, 8
.text:004010E1                 mov     ecx, eax
.text:004010E3                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@H@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(int)
.text:004010E9                 mov     ecx, eax
.text:004010EB                 call    ds:__imp_??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@P6AAAV01@AAV01@@Z@Z ; std::basic_ostream<char,std::char_traits<char>>::operator<<(std::basic_ostream<char,std::char_traits<char>> & (*)(std::basic_ostream<char,std::char_traits<char>> &))
.text:004010F1                 pop     edi
.text:004010F2                 xor     eax, eax
.text:004010F4                 pop     esi
.text:004010F5                 pop     ebp
.text:004010F6                 pop     ebx
.text:004010F7                 mov     esp, ebp
.text:004010F9                 pop     ebp
.text:004010FA                 retn
.text:004010FA _main           endp
.text:004010FA
.text:004010FA ; ---------------------------------------------------------------------------

posted @ 2010-06-20 15:39  南守拥  阅读(250)  评论(0编辑  收藏  举报