There are some bewildering sizeof() questions I have in my mind. Could anyone shed some light on this?
That is, the sizeof() a function identifier though it is treated internally as a pointer gives 1 byte always, why?
Also, sizeof(void) gives output 1 where as sizeof(void*) is 4 bytes on my Ubuntu 8.04 (32-bit) machine. I am using gnu gcc compiler. Whether this is compiler dependent?
Also, the following program compiles perfectly for me without any error
And, why the output of the following program is still 10?
we know that sizeof never returns zero when used with structure
then why in this case it is returning zero
struct foo
{
char c;
};
void main()
{
struct foo f;
cout<<sizeof(f);
}
i am working on solaris 5.8
isn't the above function should return the size of empty structure (7 Replies)
Hello All,
I am very new to UNIX. Please help me to find answers of below questions.
1.A script is saved with name ls. When we execute the script what it will execute?
a) Will execute ls command
b) Will execute the script
c) Will execute script or command depends on the path
... (2 Replies)
Hi ,
I m beginner for Unix and i want to use FIFO in my 2 Scripts . I want 1 script to read data from FIFO and other will write into FIFO.
Despite reading so many articles/posts i am still unable sunchronize my scripts.
My doubts are
1> Do We require both scripts as daemons to use... (0 Replies)
Hi All,
is it possible to find out the size of an array of structures ( without using 'sizeof' operator). The condition is we have the array of structure instant but we are not aware of the elements inside the structure.
Can someone help me out?
Thanks in advance. (18 Replies)
The below code throws the error, since the size of x = 19 is not passed to the cstrCopy function.
using namespace std;
static void cstrCopy(char *x, const char*y);
int main ()
{
char x;
const string y = "UNIX FORUM";
cstrCopy(x,y.c_str());
return 0;
}
void cstrCopy(char *x,... (3 Replies)
Hi,
I have defined the class and call the sizeof(object to class) to get the size.
# include <iostream>
# include <iomanip>
using namespace std;
class sample
{
private:
int i;
float j;
char k;
public:
sample()
{
} (2 Replies)
Hello,
I'm new to HP-UX and I'm not sure about some concepts related to resizing fs's under this OS.
First of all I'm only asking about resizing ONLINE, it means, without having to umount the fs nor rebooting, etc.
Q1. I've read that in order to resize a fs online there are 2 requirements:... (3 Replies)
Hai
how to find size of a file??
ex : /home/kiran/pdk/sample/calibre this is a path
In that I have to find size of a files in side a calibre(it is the folder) like .results or .summary (1 Reply)
Ignoring other considerations for a moment and in general ...
Would there be a difference in result (dot oh or execution) of:
A.
strncpy( a, b, sizeof(a) );
vs.
B.
c = sizeof(a);
strncpy( a, b, c );
My general understanding is (at least I think my understanding is) that... (10 Replies)
Discussion started by: GSalisbury
10 Replies
LEARN ABOUT HPUX
elf_fsize
elf_fsize(3E)elf_fsize(3E)NAME
elf32_fsize, elf64_fsize - return the size of an object file type for elf32 files, return the size of an object file type for elf64 files,
respectively.
SYNOPSIS
[flag... ] file... [library] ...
DESCRIPTION
gives the size in bytes of the 32-bit file representation of count data objects with the given type. The library uses version ver to cal-
culate the size (see elf(3E) and elf_version(3E)).
Constant values are available for the sizes of fundamental types.
Elf_Type File Size Memory Size
------------------------------------------------------
ELF_T_ADDR ELF32_FSZ_ADDR sizeof(Elf32_Addr)
ELF_T_BYTE 1 sizeof(unsigned char)
ELF_T_HALF ELF32_FSZ_HALF sizeof(Elf32_Half)
ELT_T_OFF ELF32_FSZ_OFF sizeof(Elf32_Off)
ELF_T_SWORD ELF32_FSZ_SWORD sizeof(Elf32_Sword)
ELF_T_WORD ELF32_FSZ_WORD sizeof(Elf32_Word)
returns zero if the value of type or ver is unknown. See elf_xlate(3E) for a list of the type values.
gives the size in bytes of the 64-bit file representation of count data objects with the given type. The library uses version ver to cal-
culate the size (see elf(3E) and elf_version(3E)).
Constant values are available for the sizes of fundamental types.
Elf_Type File Size Memory Size
------------------------------------------------------
ELF_T_ADDR ELF64_FSZ_ADDR sizeof(Elf64_Addr)
ELF_T_BYTE 1 sizeof(unsigned char)
ELF_T_HALF ELF64_FSZ_HALF sizeof(Elf64_Half)
ELT_T_OFF ELF64_FSZ_OFF sizeof(Elf64_Off)
ELF_T_SWORD ELF64_FSZ_SWORD sizeof(Elf64_Sword)
ELF_T_WORD ELF64_FSZ_WORD sizeof(Elf64_Word)
returns zero if the value of type or ver is unknown. See elf_xlate(3E) for a list of the type values.
SEE ALSO elf(3E), elf_version(3E), elf_xlate(3E).
elf_fsize(3E)