I'll add that both gcc and VC do a nice job of compiling this for x86:
almostt identical code, 35 instructions in 88 bytes.
An issue with the ctype.h functions - again only important in tight
environments - is that some implementations use tables that are 1024
bytes.
On Sep 1, 5:55 pm, Gene wrot
Sure. Is something wrong with using the functionality already built
into the language?
Here is another way:
int hexToDec(char *string)
{
int x = 0;
for(int i = 0; string[i]; ++i)
{
if (isdigit(string[i]))
x = (x*16) + string[i] - '0';
else if ((string[i] >= 'a') && (string[i]
Sure there are other ways. But why duplicate functionality already
built into the language?
Here is one way to write your own conversion function:
int hexToDec(char *string)
{
int x = 0;
for(int i = 0; string[i]; ++i)
{
if (isdigit(string[i]))
x = (x*16) + string[i] - '0';
els
The language does give it tyou in sscanf, but sscanf is a pretty big
function and in some environments, like small embedded ones, you don't
get the luxury of using a big block of code to do a small thing.
unsigned hex_to_unsigned(char *p)
{
unsigned val = 0;
while (*p != '\0') {
char c =
Don's method is the best that I can think of.
On Thu, Sep 1, 2011 at 1:24 PM, Don wrote:
> Of course there are other methods, but why duplicate functionality
> already provided by the language?
> Don
>
> On Sep 1, 11:34 am, rShetty wrote:
> > Given a Hexadecimal value as a string, give a C Code
Of course there are other methods, but why duplicate functionality
already provided by the language?
Don
On Sep 1, 11:34 am, rShetty wrote:
> Given a Hexadecimal value as a string, give a C Code to convert it
> into decimal value?
> If 0xff then output should be 255.
--
You received this messag
int n;
char *string = "0xff"; // Or whatever
sscanf(string, "%x", &n);
printf("%d\n", n);
On Sep 1, 11:34 am, rShetty wrote:
> Given a Hexadecimal value as a string, give a C Code to convert it
> into decimal value?
> If 0xff then output should be 255.
--
You received this message because you
sscanf(string, "%x", &n);
On Sep 1, 11:34 am, rShetty wrote:
> Given a Hexadecimal value as a string, give a C Code to convert it
> into decimal value?
> If 0xff then output should be 255.
--
You received this message because you are subscribed to the Google Groups
"Algorithm Geeks" group.
To
