sscanf - tricky func.

Hi,
I`m trying to read the first out of two collums.
Im using the sscanf function, and get one surprise after the other.

Why is the following code printing everything twice?

Code:

 FILE *Koord;
 Koordinaten=fopen("hpgl.txt","r");    //reads from hpgl.txt

 while(i<10&&fgets(buff,sizeof(buff),Koord)!=NULL) //do10x 
   {
   if (sscanf(&buff[2],"%d%d",&x[i],&y[i])==2)   //begin buff3 and take only 2int
      {
     //cout<<"i="<<i<<" x="<<x[i]<<" y="<<y[i]<<"\n";
     printf("i=%d x=%d y=5d\n",i,x[i],y[i]);
      i++;
      }
   }
  getch();
}

The textfile looks like this:
pd2 1
pd6 5
........
And the output of my prog.:

i=0 x=2 y=1
i=1 x=2 y=1
i=2 x=6 y=5
...... it does everyting correct, but twice!?

Now another problem:

Here is what I want do do:

I have 2 colums of hexnumbers, and I only want to take the first one and read its byte value.
FDAC FF
24 F7
..........

Heres my code:

Code:

FILE *HexCode;
HexCode = fopen("hex.txt","r");  //reads from textfile

/*----- take the first hex goe to next line ------*/

 for(i=0;i<5;i++)
 {
 fgets(buff,sizeof(buff),HexCode);
   if (sscanf(&buff[0], "%x", &x[i])==1);
    {
     printf(" %x\n",x[i]);
     }
  }
 getch(); //wait
}

What it does:
it reads everything, not only the first colum:
like:
FDAC
FF
24
F7

Can anyone help me?

How did you declare buff ?
Or for that matter, your arrays.

Snippets of where you think the problem is are not always that informative. Small complete programs which demonstrate a problem (which we can try) are so much better.

> if (sscanf(&buff[0], "%x", &x[i])==1);
You really don't want the ; at the end of this line

Here´s the complete code:
It does everything twice.

Code:

#include<iostream.h>
#include<stdio.h>
#include<conio.h>
#include<ctype.h>
//-------------------------------------------------
 void main()
 {
 int i,j;
 int x[10], y[10];
 char buff[6];
 FILE *Koordinaten;

 Koordinaten=fopen("hpgl.txt","r");    //reads from hpgl.txt
 clrscr();
//------------------------------------------------------------------------------
  while(i<4&&fgets(buff,sizeof(buff),Koordinaten)!=NULL)//do10x orempty buff
   {
   if (sscanf(&buff[2],"%d%d",&x[i],&y[i])==2)  //begin buff3 and nimm nur 2int
      {
     //cout<<"i="<<i<<" x="<<x[i]<<" y="<<y[i]<<"\n";
     printf("i=%d x=%d y=5d\n",i,x[i],y[i]);
      i++;
      }
   }
  getch();
}

Here it takes everything, not only the first nr.:

Code:

/**********************
//TestBuff10            *
/**********************/
#include<windows.h>
#include<iostream.h>
#include<conio.h>
#include<stdio.h>

int main()
{

char buff[6] ;
int i;
int x[10];

FILE *HexCode;
HexCode = fopen("hex.txt","r");  //reads hex.txt

clrscr();
  while (i<10 && fgets(buff,sizeof(buff),HexCode)!= NULL)
  {
    if (sscanf(&buff[0], "%x", &x[i])==1)
      {
       printf(" %x\n",x[i]); i++;
      }
   }
getch();
}