Programming Forums > Application Development > C++

smshahriar · Feb 7th, 2005, 6:53 PM

Hi,

I want to scan from the following string all the hex numbers and
populate an array of integers:

0x27 0x00
0x30 0x00
0x33 0x00
0x36 0x00

...

How can I do so? Doing sscanf with a long list of "%x %x ..... %x" will
do it. But is there a better way such as a loop etc.

Can someone please help.

Thanks,

Shake

Eggbert · Feb 8th, 2005, 3:30 PM

Here's a nifty solution.

(Toggle Plain Text)

#include <stdio.h>

int main ( void )
{
  char *v = "0 1 2 3 4 5 6 7 8 9";
  int i, x, n;

  for ( i = 0; sscanf ( v + i, "%d%n", &x, &n ) == 1; i += n )
    printf("%d ", x);
  printf("\n");

  return 0;
}

Feb 7th, 2005, 6:53 PM	#1
smshahriar Newbie Join Date: Feb 2005 Posts: 1 Rep Power: 0	sscanf or vsscanf : want to scan a list of integers in c Hi, I want to scan from the following string all the hex numbers and populate an array of integers: 0x27 0x00 0x30 0x00 0x33 0x00 0x36 0x00 ... How can I do so? Doing sscanf with a long list of "%x %x ..... %x" will do it. But is there a better way such as a loop etc. Can someone please help. Thanks, Shake

Feb 8th, 2005, 3:30 PM	#2
Eggbert Professional Programmer Join Date: Nov 2004 Posts: 250 Rep Power: 4	Here's a nifty solution. (Toggle Plain Text) #include <stdio.h> int main ( void ) { char v = "0 1 2 3 4 5 6 7 8 9"; int i, x, n; for ( i = 0; sscanf ( v + i, "%d%n", &x, &n ) == 1; i += n ) printf("%d ", x); printf("\n"); return 0; } #include <stdio.h> int main ( void ) { char v = "0 1 2 3 4 5 6 7 8 9"; int i, x, n; for ( i = 0; sscanf ( v + i, "%d%n", &x, &n ) == 1; i += n ) printf("%d ", x); printf("\n"); return 0; }

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Programming Forums > Application Development > C++

sscanf or vsscanf : want to scan a list of integers in c