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8086 program to reverse a string

Given a string S as input. You have to reverse the given string. Input: First line of input contains a single integer T which denotes the number of test cases. T test cases follows, first line of each test case contains a string S. Output: Corresponding to each test case, print the string S in reverse order. If you have purchased any course from GeeksforGeeks then please ask your doubt on course discussion forum.

You will get quick replies from GFG Moderators there. Please choose 'ReadOnlyMode' if you needn't to 'Edit' the problem e. Please note that Custom Input s should be mentioned in the same order format as stated in the problem description.

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8085 program to transfer a block in reverse order

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8086 program to reverse a string

Note: Please use this button to report only Software related issues.Write ALP to perform string manipulation. OBJ files of both the modules and link them to create an. EXE file. Like Like.

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8086 program to reverse a string

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Name required. Previous Previous post: Write Assembly Language Program ALP for the various string operations, to calculate length of the string,reverse the string,check whether the string is palindrome. By continuing to use this website, you agree to their use. To find out more, including how to control cookies, see here: Cookie Policy.Problem — Write an assembly language program in microprocessor to reverse 8 bit number using 8 bit operation.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute. See your article appearing on the GeeksforGeeks main page and help other Geeks. Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Writing code in comment? Please use ide. Example — Assume 8 bit number is stored at memory location Recommended Posts: program to reverse 16 bit number using 8 bit operation program to reverse a string program to convert an 8 bit BCD number into hexadecimal number program to find the factorial of a number program to search a number in a string program to convert 8 bit ASCII to BCD number program to find sum of digits of 8 bit number program to Print a 16 bit Decimal number program to find Square Root of a number program to convert a 16 bit decimal number to Hexadecimal program to convert 8 bit BCD number into ASCII Code program to convert a 16 bit decimal number to binary program to convert a 16 bit Decimal number to Octal program to divide a 16 bit number by an 8 bit number program to determine largest number in an array of n numbers.

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8086 Assembly Program to Find Reverse of an Array

Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have this code to reverse a string using ALP. But the code does not work as intended and gets into a infinite loop or prints some random charecter.

Actually, length is containing the offset of itself, minus the offset of String1minus 1. An EQU does not take any place in the resulting program. If anyway you would like to have a place in memory with the string length and not only defining it at assembly time, you can do. I would like to say that i am not familiar with this kind of implementation and i cannot help more.

But take a look to this code which is also reverse a String. Learn more. Error while reversing string in Ask Question. Asked 6 years, 3 months ago. Active 6 years, 3 months ago. Viewed 1k times. Seki 10k 5 5 gold badges 36 36 silver badges 58 58 bronze badges.

Make the stack bigger and try again. I cannot assemble your code neither with latest masm32, nor with legacy masm 5. Active Oldest Votes. The following slightly modified program do what you want:. Seki Seki 10k 5 5 gold badges 36 36 silver badges 58 58 bronze badges. Molnia Molnia 40 10 10 bronze badges. Yes but since the stack is empty, i think that the length of the String has the same value with the ip of the stack. Am i right? Please correct me if i am wrong. No, as I was suspecting, the issue is in the dw instead of an equ declaration of the length resulting of a wrong address computing to begin the reversing.

Another problem is that the given code is for emu and cannot compile with masm. See my answer.

8086 program to reverse 16 bit number using 8 bit operation

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8086 program to reverse a string

Featured on Meta.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am trying to make a program where the user have to enter a string and get an reversed output.

Moreover, it should change all lowercase letters to uppercase and uppercase to lowercase. I've already done program where you can enter 1 character. My next goal is to get as many characters as I want. Now I am getting a wrong output. For example if you enter Hello it will return olleHh. I am completely confused since I can't figure out my error. Also, I am new in Assembly. Since the last character in AL was capital H in your example and which was flipped to lower case h by your code.

That is where you get that extra h at the end of your output string. You could have simply flipped the cases and displayed the reverse string in one go and that without using INT 10h. And as Ped7g said you should use comment in your program because that explain what you are trying to do in your program and makes it easy for people to debug it.

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34. String reverse

Assembly emu, reversing a string Ask Question. Asked 2 years, 4 months ago. Active 2 years, 3 months ago. Viewed 3k times.It is important that you mention what type of error you get, an assembler error or a run-time error probably a bug — for example not getting the expected output. If you describe the error, I might find the source of error by visually inspecting your code. You are commenting using your WordPress. You are commenting using your Google account.

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Notify me of new posts via email. Skip to content. Home About. Like this: Like Loading This entry was posted in Assembly and tagged Assemblyx Bookmark the permalink.

February 24, at am. Dru says:. November 28, at pm. December 6, at am. April 9, at am. April 9, at pm. Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:.

Email required Address never made public. Name required. Search for:. By continuing to use this website, you agree to their use.Therefore we take it approx size Size of Array or Array Size. DUP stands for Duplicate i.

We can write just ENDS But to differentiate the end of which segment it is of which we have to write the same name given to the Data Segment. Now, Selection of data type is DB data type the numbers which we are adding will be integers so DB is sufficient. In the Program, We are entering the values for the variables and Do arithmetical Operations like Addition, Subtraction, Multiplication and Division So the Computer should understand which kind of Number is entered.

Hence there is a different letters for different Number Systems. By default type of numbering system is Decimal. If you do not specify any letter then the number is understood to be Decimal By default.

8086 program to reverse a string

Macros are just like procedures, but not really. Macros look like procedures, but they exist only until your code is compiled, after compilation all macros are replaced with real instructions. If you declared a macro and never used it in your code, compiler will simply ignore it. MSG is the Argument Passed. The code which is used most of the time is written in between the macro for reducing the length of Code.

Data Segment, 2. Code Segment, 3. Stack Segment, and 4. Now, from these one is compulsory i. Code Segment and Data Segment. MOV is a keyword to move the second element into the first element. AX is the first and most important register in the ALU unit. Other Segments are not needed to be initialized, Only assuming is enhalf.


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