This way, you'll only hold a fraction of the file at each time: using (System.IO.StreamWriter writer = new System.IO. To avoid holding all in memory, you should stream the data, converting and writing each chunk. If you want to put the result intoĪn array you could something like sprintf() to put your output into some buffer(s).Your problem is that you load the whole file into memory, convert each byte to three characters (that's the file size times 6), going through Replace and ToCharArray. If you have any questions please feel free to let me know! Thanks in advance for all your help! I really do appreciate it!įgets(file_name, sizeof(file_name), stdin) I want to decompile it to C++, or at least assembly. I hope my question and what I'm trying to do makes sense. hex format, it was built for a nuvoton NUC220LE3AE.

txt file, but I want the hexadecimal values underneath (in other words a sort of hexdump of the file). I tried googling to see if others were trying to do the same thing, but people were either already reading from a binary file or already had hexadecimal values in the file. How can I structure this program so that it reads the hexadecimal values of a standard text file and either (a) puts them in an array (which I think should be simple enough with a for loop) or (b) prints them out to the screen? However, the problem is that even though I'm in 'read binary' mode, it won't give me the hexadecimal values of the text file. Printf('The contents of %s file are : ', file_name) Īs you can see this is really just a simple file in, read and print contents. Perror('Error while opening the file. ')

Printf('Enter the name of file you wish to see ') įp = fopen(file_name,'rb') // read binary mode txt file and not a binary file) and store it in an array for later. For example, say I had the text file 'helloworld.txt' that simply had the words 'Hello World!' in it, I want to specify to the program to take that file, read its hexidecimal values (again the file is a simple. HEX file to flash into the 8051 microcontroller. I have a program written in C or assembly language which I need to convert into a.

I want to take in a file and view its hexadecimal values. Ask Question Asked 2 years, 8 months ago Modified 2 years, 8 months ago Viewed 150 times 0 I am new to microcontroller programming. I am writing a c program that functions much like a hex editor.

Convert c file to hex