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INT 21h / AH= 3Ch - create or truncate file.
entry:
CX = file attributes: mov cx, 0 ; normal - no attributes. mov cx, 1 ; read-only. mov cx, 2 ; hidden. mov cx, 4 ; system mov cx, 7 ; hidden, system and read-only! mov cx, 16 ; archive
DS:DX -> ASCIZ filename.
returns:
CF clear if successful, AX = file handle.
CF set on error AX = error code.
note: if specified file exists it is deleted without a warning.
example: org 100h mov ah, 3ch mov cx, 0 mov dx, offset filename mov ah, 3ch int 21h jc err mov handle, ax jmp k filename db "myfile.txt", 0 handle dw ? err: ; .... k: ret
What else can I help you with?
How do you empty a file using C programming?
That depends on the type of file and what you mean by "empty". Generally, fopen() called on an existing file, with the "w" option instead of the "a" option will truncate the file to zero length. To delete a file completely is a different process. Function truncate is your friend.
Assembly level programming?
Yes.
What is a sentence for the word truncate?
my brother can truncate my computer
Programming language for assemblers?
Is called Assembly.
Elements of assembly language programming What is A simple assembly scheme pass structure of assembler design of two pass assemblers a single pass assemblers what is macros?
what are the elements of assembly language programming?
What type of programming language does assembly language use?
Assembly language uses a low-level programming language that directly corresponds to machine code instructions.
How do you truncate achieve?
To truncate a value typically means to shorten it by cutting off part of it, often after a certain number of digits or characters. In programming, this can be done using functions or methods that limit the length of strings or numerical values, such as substring() in Java or Python's slicing syntax. For numerical values, you might use rounding methods that limit decimal places. The specific approach can vary depending on the programming language or context in which you're working.
What are the features of batch file programming?
Batch file programming is dos based programming you have to use dos commands .It is very good to perform some repetitive task in computer programming is easy you should only know the dos commands.
What programming languages are operating systems written in?
C and Assembly.
Can you use commit statement after truncate?
You can use COMMIT any time, but it is not necessary after TRUNCATE TABLE.
What does the word 'truncate' mean?
Truncate has many meanings depending on how it is used in a sentence. If it is used as a verb, truncate means to shorten something. If used as an adjective it means it stopped suddenly.
How would you use truncate in a sentence?
She had to truncate her story, so that it would fit into the five minute session.
