Hex To Dec

[jgabase]

Hi friends, could you please show me a quick and easy method to convert Hexadecimal to Decimal?

Something equivalent to the inverse function IntToHex( int value, int digits )

with the possibility to get a desired number of decimal digits.


Thx and regards

[Skizmo]

Hex .. as in a string that contains a hex value ? You can use sscanf in combination with '%x' .

[jgabase]

Thanks, I have had to spend some time developing a function to do that.
It works fine, so here you are. Do not forget to call #include <math.h>


double HexToInt(String hexvalue)
{
double intvalue=0;
String singlechar;
String texttosplit = hexvalue;
int len=texttosplit.Length();
while (len>=1)
{
singlechar=texttosplit;
singlechar.SetLength(1);
if(singlechar=="0") { intvalue = intvalue + 0; }
if(singlechar=="1") { intvalue = intvalue + 1*pow(16,len-1); }
if(singlechar=="2") { intvalue = intvalue + 2*pow(16,len-1); }
if(singlechar=="3") { intvalue = intvalue + 3*pow(16,len-1); }
if(singlechar=="4") { intvalue = intvalue + 4*pow(16,len-1); }
if(singlechar=="5") { intvalue = intvalue + 5*pow(16,len-1); }
if(singlechar=="6") { intvalue = intvalue + 6*pow(16,len-1); }
if(singlechar=="7") { intvalue = intvalue + 7*pow(16,len-1); }
if(singlechar=="8") { intvalue = intvalue + 8*pow(16,len-1); }
if(singlechar=="9") { intvalue = intvalue + 9*pow(16,len-1); }
if(singlechar=="A" || singlechar=="a") { intvalue = intvalue + 10*pow(16,len-1); }
if(singlechar=="B" || singlechar=="b") { intvalue = intvalue + 11*pow(16,len-1); }
if(singlechar=="C" || singlechar=="c") { intvalue = intvalue + 12*pow(16,len-1); }
if(singlechar=="D" || singlechar=="d") { intvalue = intvalue + 13*pow(16,len-1); }
if(singlechar=="E" || singlechar=="e") { intvalue = intvalue + 14*pow(16,len-1); }
if(singlechar=="F" || singlechar=="f") { intvalue = intvalue + 15*pow(16,len-1); }
len--;
texttosplit.Delete(1,1);
}
return intvalue;
}


Best regards
JoaquÃ*n Gabás

[Pocoya]

Jimmy gabas you can't loop ?