fscanf issues (again)

[dsotm26]

hello i am a bit confused here
all i want to do is open a file and read the first line from it which happens to be a hexidecimal number say C8

it sort of works but the value that is printed is not 200
(which is the decimal equiv. to C8)


int GetValue(FILE* fptr){

int val;
char buff[100];

start = 0;
fgets(buff,95,fptr);
sscanf(buff, "%d", &val);
printf("hex value: %0xd\n", val);
printf*("dec value: %d\n",val);
}

it outputs 10d or 0d
or something else am i not initializing something somewhere?

can someone point to what i am doing wrong here?

[j0nas]

Replace
sscanf(buff, "%d", &val);
with
sscanf(buff, "%x", &val);

Good luck,
Jonas

[Gorgor]

%d in scanf tells it to look for a decimal number in the input, not a hexadecimal number.

If trying to read "C8", the scanf would first see the "C", and choke because that isn't a digit, which it is expecting. What it puts into the variable "val" is a good guess. Might be 0, might be unchanged (i.e. garbage in this example.) Might be the number of jelly beans in a jar.