所以这些是我的代码的目标： 本作业的目的是让您体验使用循环、数组以及创建和使用您自己的过程的经验。您需要创建一个程序，允许用户输入一个字符串并在该字符串中搜索用户指定的字符。程序将返回该字符在字符串中出现的次数、该字符的第一次出现和最后一次出现。
要求： 允许用户输入要在搜索中使用的字符。 您必须创建一个搜索过程，该过程接收对用户输入的字符串的引用（指针）、字符串的大小以及要在搜索中使用的字符。此过程无法获得用户的输入或将输出显示到屏幕。它必须简单地查看字符串，找到必要的信息，并使用寄存器返回输出（出现次数、第一次出现和最后一次出现）。 您必须使用变量来存储所有用户输入和值。 您必须在代码中使用注释和良好的编程习惯（适当的间距、适当的代码缩进和良好的命名）。
示例程序：
Enter a string: CSC203 RCSJ
Enter a character to use in the search: C
Performing search...
Search completed.
Search results:
The character 'C' was found 3 times in the string.
First occurrence: 1
Last occurrence: 9
我的代码是这样的：
INCLUDE Irvine32.inc
.DATA
inputString BYTE 100 DUP(0) ; Define a buffer for the user's input string
searchChar BYTE ? ; Define a variable to store the character to search for
;strLength DWORD ? ; Define a variable to store the length of the string
count DWORD 0 ; Define a variable to store the count of occurrences
firstIndex DWORD 0 ; Define a variable to store the index of the first
lastIndex DWORD 0 ; Define a variable to store the index of the last occurrence
promptString BYTE "Enter a string: ",0
promptChar BYTE "Enter a character to use in the search: ",0
searchStart BYTE "Performing search...",0
searchEnd BYTE "Search completed.",0
resultsTitle BYTE "Search results:",0
foundCountString BYTE "The character '%c' was found %d times in the string.",0dh, 0ah, 0
firstOccurString BYTE "First occurrence: %d",0
lastOccurString BYTE "Last occurrence: %d",0
.CODE
main PROC
; prompt the user for input string
mov edx, OFFSET promptString
call WriteString
mov edx, OFFSET inputString
mov ecx, SIZEOF inputString
call ReadString
; prompt the user for search character
mov edx, OFFSET promptChar
call WriteString
call ReadString
call Crlf
mov searchChar, al
call Crlf
; perform the search
mov edx, OFFSET searchStart
call WriteString
mov count, 0 ; initialize count to 0
call SearchForChar
call Crlf
call Crlf
mov edx, OFFSET searchEnd
call WriteString
call Crlf
call Crlf
; display the results
mov edx, OFFSET resultsTitle
call WriteString
call Crlf
mov eax, count
movzx ecx, searchChar
mov edx, OFFSET foundCountString
call WriteString
call Crlf
call WriteChar ; add this line to print the searchChar value
call WriteDec ; add this line to print the count value
mov edx, OFFSET firstOccurString
call WriteString
mov eax, firstIndex
call WriteDec
call Crlf
mov edx, OFFSET lastOccurString
call WriteString
mov eax, lastIndex
call WriteDec
call Crlf
exit
main ENDP
SearchForChar PROC
; initialize variables
mov ecx, edx
mov esi, OFFSET inputString
movzx ebx, searchChar
mov count, 0
mov firstIndex, -1
mov lastIndex, -1
; loop through the string
mov edi, 0
searchLoop:
cmp BYTE PTR [esi+edi], 0 ; check for end of string
je endSearchLoop
cmp BYTE PTR [esi+edi], bl ; compare current character with
jne nextChar
add count, 1 ; increment count
cmp firstIndex, -1 ; check if first occurrence has been found
jne nextChar
mov firstIndex, edi ; set first occurrence
nextChar:
mov lastIndex, edi ; update last occurrence
inc edi ; move to next character
jmp searchLoop
endSearchLoop:
; return the results in registers
mov eax, count
mov ebx, firstIndex
mov ecx, lastIndex
ret
SearchForChar ENDP
END main
调试屏幕上显示的结果是：
Enter a string: teddy
Enter a character to use in the search: d
Performing search...
Search completed.
Search results:
The character '%c' was found %d times in the string.
0First occurrence: %d4294967295
Last occurrence: %d4
我需要帮助来格式化代码并将“%c”和 %d 替换为正确的值。所以它会说“字符‘d’在字符串中被找到了 2 次。”