What is the meaning 0xfb00000000000LL

[parag_paul]

What is the purpose of the LL in the end , Any way it is long long

 

[Guest]

What is the purpose of the LL in the end , Any way it is long long

If you do not put the LL at the end it will be treated as a literal int,
for which the value is too big so you would not get the value you
expected. Notice also that long long is not part of the current standard
(but will be in the next).

 

[Markus Moll]

Hi

If you do not put the LL at the end it will be treated as a literal int,

No, currently the type is chosen as the first one that is big enough in the
sequence:

int, long int (for decimal literals)
int, unsigned int, long int, unsigned long int (for octal and hexadecimal
literals)

If it does not fit into the largest type, strictly speaking, the program is
ill-formed. However, I would expect any reasonable compiler to support long
long already.

The suffixes are useful mainly if you want to denote e.g. a small long:

void f(int);
void f(long);

f(3L); // call the long overload


Markus

 

[Old Wolf]

If you do not put the LL at the end it will be treated as a literal int,
for which the value is too big so you would not get the value you
expected.

This seems to be a fairly common misconception
(i.e. if the suffix is omitted, the value is
treated as an int regardless) - does anyone
know where it came from?

 

[Ben Pfaff]

This seems to be a fairly common misconception
(i.e. if the suffix is omitted, the value is
treated as an int regardless) - does anyone
know where it came from?

Perhaps it is because most integer constants have type int? I
imagine that programmers just extrapolate from "most" to "all".

 

[Gianni Mariani]

This seems to be a fairly common misconception
(i.e. if the suffix is omitted, the value is
treated as an int regardless) - does anyone
know where it came from?

Probably from compiler bugs.

 

[James Kanze]

What is the purpose of the LL in the end , Any way it is long long

The purpose of the LL is to make it a long long. Otherwise, the
type depends on the machine---on my machines, it's a long.