VC6.0循环语句

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--- E:/program/test/main.cpp ----------------------------------------------------------------------------------------------------------------------------

1: #include <iostream>

2: using namespace std;

5: int main()

6: {

00401030 push ebp

00401031 mov ebp,esp

00401033 sub esp,48h

00401036 push ebx

00401037 push esi

00401038 push edi

00401039 lea edi,[ebp-48h]

0040103C mov ecx,12h

00401041 mov eax,0CCCCCCCCh

00401046 rep stos dword ptr [edi]

9: int a=10;

00401048 mov dword ptr [ebp-4],0Ah

10: do

11: {

12: a=a-1;

0040104F mov eax,dword ptr [ebp-4]

00401052 sub eax,1

00401055 mov dword ptr [ebp-4],eax

13:

14: }

15: while(a);

00401058 cmp dword ptr [ebp-4],0

0040105C jne main+1Fh (0040104f)//注意 do..while() 是往上跳,结构最简单

16:

17:

18: a=10;

0040105E mov dword ptr [ebp-4],0Ah

19: while(a)

00401065 cmp dword ptr [ebp-4],0 //按程序流图,易理解

00401069 je main+46h (00401076)

20: {

21: a=a-1;

0040106B mov ecx,dword ptr [ebp-4]

0040106E sub ecx,1

00401071 mov dword ptr [ebp-4],ecx

22:

23: }

00401074 jmp main+35h (00401065)

24:

25:

26: int b=0;

00401076 mov dword ptr [ebp-8],0

27: for(a=10;a>0;a--)

0040107D mov dword ptr [ebp-4],0Ah //记住for(; ;)里面的内容是被编译在一起

00401084 jmp main+5Fh (0040108f)

00401086 mov edx,dword ptr [ebp-4]

00401089 sub edx,1

0040108C mov dword ptr [ebp-4],edx

0040108F cmp dword ptr [ebp-4],0

00401093 jle main+70h (004010a0)

28: {

29: b=b+1;

00401095 mov eax,dword ptr [ebp-8]

00401098 add eax,1

0040109B mov dword ptr [ebp-8],eax

30:

31: }

0040109E jmp main+56h (00401086)

32:

33:

34: return 0;

004010A0 xor eax,eax

35: }

004010A2 pop edi

004010A3 pop esi

004010A4 pop ebx

004010A5 mov esp,ebp

004010A7 pop ebp

004010A8 ret

--- No source file