memory

[arunraj2002in]

Hi All,

int x;
scanf("%x",&x);
printf("%d",x);

If user gives the i/p as FFFFFF00 what is the o/p?

[JosAH]

Hi All,

int x;

scanf("%x",&x);

printf("%d",x);



If user gives the i/p as FFFFFF00 what is the o/p?

If shows the decimal represenation of 0xffffff00 and it depends on the size of
the ints on your computer. Why don't you give it a try?

kind regards,

Jos

[arunraj2002in]

If shows the decimal represenation of 0xffffff00 and it depends on the size of
the ints on your computer. Why don't you give it a try?

kind regards,

Jos

Here the output is -256.. i don't understand why??

[arunraj2002in]

Here the output is -256.. i don't understand why??

for input as 'ffffffff' the output is -1.. thats fine but why -256 for ffffff00

[JosAH]

for input as 'ffffffff' the output is -1.. thats fine but why -256 for ffffff00

It's twos complement notation: if ffffffff equals -1, then fffffffe equals -2, then
ffffffd equals -3, then ... then ffffff01 equals -255, then ffffff00 equals -256.

kind regards,

Jos