Write an assembly language program for 8086 to read two strings and check whether they are same or not.

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Suresh Chand · Accepted Answer

Here is an assembly language program for the 8086 processor to read two strings and check whether they are the same or not: ; Program to read two strings and check if they are the same ; Written for 8086 processor .model small .stack 100h ; Define data segment .data message1 db 'Enter first string: $' message2 db 'Enter second string: $' matchMsg db 'Strings match!$' noMatchMsg db 'Strings do not match!$' string1 db 20,?,dup('$') ; first string with maximum length of 20 string2 db 20,?,dup('$') ; second string with maximum length of 20 strLength dw ? ; Define code segment .code main proc ; Initialize data segment mov ax, @data mov ds, ax ; Read first string mov ah, 09h lea dx, message1 int 21h mov ah, 0ah lea dx, string1 int 21h ; Read second string mov ah, 09h lea dx, message2 int 21h mov ah, 0ah lea dx, string2 int 21h ; Compare strings lea si, string1+2 lea di, string2+2 mov cx, [string1] ; get length of first string cmp cx, [string2] ; compare to length of second string jne noMatch ; if not equal, strings do not match repe cmpsb ; compare each character until end of strings or mismatch je match ; if equal, strings match noMatch: ; Output message for non-matching strings mov ah, 09h lea dx, noMatchMsg int 21h jmp exit match: ; Output message for matching strings mov ah, 09h lea dx, matchMsg int 21h exit: ; Exit program mov ah, 4ch int 21h main endp end main This program reads two strings from the user and compares them character by character using the cmpsb instruction. If any character mismatches or the length of the strings is not the same, the program outputs a message indicating that the strings do not match. If all characters match, the program outputs a message indicating that the strings match. Note that the specific instructions used in this program may vary depending on the assembly language syntax and programming conventions used.

Write an assembly language program for 8086 to read two strings and check whether they are same or not.

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Write an assembly language program for 8086 to read two strings and check whether they are same or not.

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