fscanf issues (final question)

[dsotm26]

im a bit confused by the following action
say i have a file
/////////////////////////////
20
34 04422886
/////////////////////////////

if i read this file using the following code

while(fgets(buff,95,infile)) {
sscanf(buff,"%x %x",&memAddress,&memContents);
if(memContents == -1){
/* code to skip first line */
}
else{
memAdd[i] = memAddress;
memCont[i] = memContents;
}

*note* i do have other error checking within this
block i reduced it to the most basic read stuff for posting
where memAddr should be 34
and memContents should be 04422886

and i do the folllowing

printf("memContents = %x\n", memCont[i]);

my output is
memContents = 4422886

what happened to the 0 that began the hexidecimal number

[j0nas]

It is just like with any other bases (position system)... leading zeros don't count, ie 00ff == ff.

[Gorgor]

If you're printing out a 32-bit hex number, do this:


printf("0x%08x", theHexNumber);


For 003abcde, will print:

0x003abcde

Use capital X if you want capital hex letters. FYI, with the 08 in the formatting spec, the 0 tells it to pad using "0", and the 8 tells it to output, minimum, 8 characters. Also, the leading "0x" is just pretty print. You can leave it out of the formatting spec if you like.