CODEWITHSUNDEEP
cstringscanf
user1394234
user1394234

Reputation: 3

C sscanf errror in reading 32 bit integer

   char *pStrBuffer;

   unsigned char data;
   unsigned int Address;

   /* pStrBuffer reading from a file data in file of the form 
     WriteByte(0xDE04,0x20)
     WriteByte(0xFE08,0x50) ....

    */
   /* in a loop */
   sscanf(pStrBuffer,"%x%x",&Address,&data);

Compiler is gnu gcc 4.5 in Windows XP However the Value read for Address is 0xDE00 instead of 0xDE04 ? why is that so although value of data is read correctly. I also tried to use %lx and %hx respectively but of no use

Upvotes: 0

Views: 1707

Answers (1)

Adam Rosenfield
Adam Rosenfield

Reputation: 400454

To read a single unsigned byte, use the %hhx modifier. %hx is for an unsigned short, %x is for an unsigned int, %lx is for an unsigned long, and %llx is for an `unsigned long long.

Upvotes: 3

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