Hello, I've been searching for something similar to my program, but with no luck. My problem is that I cannot finish my code. In short i must compare 2 strings and write mismatched symbols and their number from start.
For example if strings are:
113712
121118
the result should be something similar:
(first number is position)
2 1 : 2 or 2 : 1
3 3 : 1 3 : 3
4 7 : 1 4 : 7
6 2 : 8 6 : 2
I've managed to write a code, with result printed as everything :
1 1 : 1
2 1 : 2
3 3 : 1
and so on...

this is my code please tell me what i should change or change the wrong code.

...

proc main2 near
  CLD
  LEA   si, bufferwithstring1
  LEA	di, bufferwithstring2
COMPARE:

  CMP	cx, 0
  JE	exit				
  REPE CMPSB
  JE	Skaityk
  PUSH	cx
write:
  MOV	 ax, howmanysymbols
  SUB  ax, cx			
  CALL tostring
DEC	si
DEC	di
MOV	al, [si]
MOV	mismachedbuf1, al
MOV	al, [di]
MOV	mismachedbuf2, al
INC	si						; 
INC	di	

MOV ah, 9
LEA	dx, resultbuf
INT	21h

JMP	compare
endp main2

I've tried to compare with LODSB too and i managed to get the mismached symbols, but i can't get the positions of the numbers, so if possible you can write only the code which finds the positions of mismached symbols.