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RedGhost



Joined: 18 May 2005
Posts: 443
Location: BC, Canada
RedGhost
if szMessage was 'abc'
and i wanted to push a certain character from that string
how would i go about that?

in c it would be szMessage[0], if i wanted the 'a'
Post 24 May 2005, 15:17
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coconut



Joined: 02 Apr 2004
Posts: 326
Location: usa
coconut
not sure but try something like

cmp byte [szMessage+1] ,'a'
Post 24 May 2005, 16:02
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madmatt



Joined: 07 Oct 2003
Posts: 1045
Location: Michigan, USA
madmatt
Or you can do something like this:
Code:
    mov   ecx, 0; or any character wanted.
    mov   al, [szMessage + ecx] ;get first character, position 0.
    ;this method allows you to loop though the characters.    


You did say push, so:
Code:
    mov   ecx, 2; or any character wanted
    mov   al, [szMessage + ecx] ;get third character, position 2.
    push  eax  ;ALWAYS, push a DWORD sized value on the stack.
    pop   eax ;restores char in AL. and also preserves AH
    ;this method also allows you to loop though the characters    
Post 24 May 2005, 16:30
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RedGhost



Joined: 18 May 2005
Posts: 443
Location: BC, Canada
RedGhost
coconut wrote:
not sure but try something like

cmp byte [szMessage+1] ,'a'


yeah you can compare or replace them that way

madmatt wrote:
Or you can do something like this:
Code:
    mov   ecx, 0; or any character wanted.
    mov   al, [szMessage + ecx] ;get first character, position 0.
    ;this method allows you to loop though the characters.    


You did say push, so:
Code:
    mov   ecx, 2; or any character wanted
    mov   al, [szMessage + ecx] ;get third character, position 2.
    push  eax  ;ALWAYS, push a DWORD sized value on the stack.
    pop   eax ;restores char in AL. and also preserves AH
    ;this method also allows you to loop though the characters    



thanks alot, and yeah thats exactly what i was trying to do (loop thru em)
Post 24 May 2005, 18:22
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