我需要一些指向此分配的帮助：程序将返回字符串中字母“the”序列的出现总数。[注意：我们正在寻找字母“the”而不仅仅是单词“the”。因此，例如，您还将计算“there”或“then”中的“the”。）所以我应该首先查看它是否为 't'，然后下一个字符是否为 'h' 和 'e'之后，如果是这样，增加总数。我的代码需要帮助。我想不通我的逻辑。关于如何做到这一点的任何建议都会对我有所帮助。到目前为止，这是我尚未完成的代码，我的主要问题是，即使第一个字符显然是“w”，但它的执行就像是“t”一样，我的跳转都在执行：
#include "stdafx.h"
#include <iostream>
using namespace std;
int main(int argc, char* argv[])
{
// your properly formatted assembly language data here
char Decl[] = "We hold these truths to be self-evident, that "
"all men are created equal, that they are "
"endowed by their Creator with certain "
"unalienable Rights, that among these are "
"Life, Liberty and the pursuit of Happiness. "
"That to secure these rights, Governments are "
"instituted among Men, deriving their just "
"powers from the consent of the governed, "
"That whenever any Form of Government becomes "
"destructive of these ends, it is the Right of "
"the People to alter or to abolish it, and to "
"institute new Government, laying its foundation "
"on such principles and organizing its powers in "
"such form, as to them shall seem most likely to "
"effect their Safety and Happiness. Prudence, "
"indeed, will dictate that Governments long "
"established should not be changed for light and "
"transient causes; and accordingly all epxerience "
"hath shewn, that mankind are more disposed to "
"suffer, while evils are sufferable, than to "
"right themselves by abolishing the forms to "
"which they are accustomed. But when a long train "
"of abuses and usurpations, pursuing invariably "
"the same Object evinces a design to reduce them "
"under absolute Despotism, it is their right, "
"it is their duty, to throw off such Government "
"and to provide new Guards for their future "
"security. Such has been the patient sufferance "
"of these Colonies; and such is now the "
"necessity which constrains them to alter their "
"former Systems of Government. The history of "
"the present King of Great Britain is a history "
"of repeated injuries and usurpations, all "
"having in direct object the establishment of "
"an absolute Tyranny over these States. To "
"prove this, let Facts be submitted to a "
"candid world. Entered by Thomas Arnol ";
unsigned short int total = 0;
__asm {
// your syntatically correct assembly language code here
// column alignment markers below (to guide you)
// | | |
cld ;set left to right scan
lea edi, Decl ;load offset of string
mov ecx, 1649 ;length of string +1
mov al, 't' ;load first character into al to be scanned
more1:
repne scasb ;scan byte by byte
cmp ecx, 0 ;see if end of string
je skip1 ;dont do any more processing
jmp case2
skip1: cmp ecx, 0
ja more1
case2: mov ebx, ecx ;how many characters left?
not ebx ;form positive index to string
add ebx, 1649 ;and point to letter
cmp Decl[ebx+1], 'h' ;compare next letter
je case3
jmp more1
case3: mov ebx, ecx
not ebx
add ebx, 1649
cmp Decl[ebx+2], 'e'
je final1
jmp more1
final1: inc total
}
return(0);
}