Hex to Decimal conversion in C

Posted by darkie15 on Stack Overflow See other posts from Stack Overflow or by darkie15
Published on 2010-04-04T22:27:19Z Indexed on 2010/04/04 22:33 UTC
Read the original article Hit count: 361

Filed under:

hexadecimal

|

decimal

|

c

Hi All,

Here is my code which is doing the conversion from hex to decimal. The hex values are stored in a unsigned char array:

  int liIndex ;
  long hexToDec ;
  unsigned char length[4];

  for (liIndex = 0; liIndex < 4 ; liIndex++)
  {
       length[liIndex]= (unsigned char) *content;
       printf("\n Hex value is %.2x", length[liIndex]);
       content++;
  }
  hexToDec = strtol(length, NULL, 16);

Each array element contains 1 byte of information and I have read 4 bytes. When I execute it, here is the output that I get :

 Hex value is 00
 Hex value is 00
 Hex value is 00
 Hex value is 01
 Chunk length is 0

Can any one please help me understand the error here. Th decimal value should have come out as 1 instead of 0.

Regards, darkie

© Stack Overflow or respective owner

Related posts about hexadecimal

C#: How to parse a hexadecimal digit

as seen on Stack Overflow - Search for 'Stack Overflow'
Okay, I am working on a card playing program, and I am storing card values as hexadecimal digits. Here is the array: public int[] originalCards = new int[54] { 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x21, 0x22, 0x23, 0x24, 0x25… >>> More
Converting binary to hexadecimal??

as seen on Stack Overflow - Search for 'Stack Overflow'
Hey guys, Just wondering on how I would go about converting binary to hexadecimal?? Would I first have to convert the binary to decimal and then to hexadecimal?? For example, 101101001.101110101010011 How would I go about converting a complex binary such as the above to hexadecimal? Thanks in… >>> More
Problem reading hexadecimal buffer from C socket

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using the SDL_net sockets API to create a server and client. I can easily read a string buffer, but when I try to send hexadecimal data, recv gets the length, but I cannot seem to be a able to read the buffer contents. IPaddress ip; TCPsocket server,client; int bufSize = 1024; char message[bufSize]; int… >>> More
find the colour name from a hexadecimal colour code

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi , i want to find the name of a colour from the hexadecimal colour code. When i get a hex colour code i want to find the most matching colour name. for example for the code #c06040 , how to find out if it is a shade of brown, blue or yellow ?. so that i can find the colour of an object in the image… >>> More
jQuery jPicker users: hexadecimal returns 8 digit value?

as seen on Stack Overflow - Search for 'Stack Overflow'
I've just about got the jPicker script working flawlessly in my app. However, the value it returns contains 8 digits. Example: 212ebcff Is there a preset variable that forces jPicker to return a 6 digit hex value? >>> More

Related posts about decimal

Convert string value into decimal with proper decimal points

as seen on Stack Overflow - Search for 'Stack Overflow'
i have value stored in string format & i want to convert into decimal. ex: i have 11.10 stored in string format when i try to convert into decimal it give me 11.1 instead of 11.10 . I tried it by following way string getnumber="11.10"; decimal decinum=Convert.ToDecimal(getnumber); i tried… >>> More
Trouble with a query

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi there, I'm having trouble with a query in SQL Server 2008 on some forex trading data. I have a trades table and an orders table. A trade needs to comprise of 2 or more orders. DDL schema and sample data below. What I want to do is write a query that shows the profit/loss in pips for each trade… >>> More
Rounding down DECIMAL(14,3) to thrid decimal digit in SQL 2008

as seen on Stack Overflow - Search for 'Stack Overflow'
I have to round down all incoming data with type DECIMAL(14,3) which has 3 decimal digit to the last one. I.e.: 100; 100.0; 100.00; 100.000 -> 100 100.2; 100.02; 100.20; 100.22 -> 100.xx but 100.221 -> 100.22 100.229 -> 100.22 Using which SQL operator can I check that residue of… >>> More
Double.TryParse() input decimal separator different than system decimal separator

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a source XML that uses a dot (".") as a decimal separator and I am parsing this on a system that uses a comma (",") as a decimal separator. As a result, value of 0.7 gets parsed with Double.TryParse or Double.Parse as 7000000. What are my options to parse correctly? One of them is to replace… >>> More
Rounding down DECIMAL(14,3) to third decimal digit in SQL 2008

as seen on Stack Overflow - Search for 'Stack Overflow'
I have to round down all incoming data with type DECIMAL(14,3) which has 3 decimal digit to the last one. I.e.: 100; 100.0; 100.00; 100.000 -> 100 100.2; 100.02; 100.20; 100.22 -> 100.xx but 100.221 -> 100.22 100.229 -> 100.22 Using which SQL operator can I check that residue of… >>> More