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How to get the sizeof char pointer
Post 302322516 by blowtorch on Thursday 4th of June 2009 02:58:37 AM
06-04-2009
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1. Programming
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)
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2. Programming
Hi,
char *s="yamaha";
cout<<s<<endl;
int *p;
int i=10;
p=&i;
cout<<p<<endl;
1) For the 1st "cout" we will get "yamaha" as output. That is we are getting "content of the address" for cout<<s.
2) But for integer "cout<<p" we are getting the "address only".
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3. Programming
Hello,
I'm trying to write a method which will return the extension of a file given the file's name, e.g. test.txt should return txt. I'm using C so am limited to char pointers and arrays. Here is the code as I have it:
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If one wants to get a start address of a array or a string or a block of memory via a function, there are at least two methods to achieve it:
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5. Programming
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?
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6. Programming
Hi,
There are some bewildering sizeof() questions I have in my mind. Could anyone shed some light on this?
int main() {
printf("%d\n", sizeof(main)); // Ans: 1
}
That is, the sizeof() a function identifier though it is treated internally as a pointer gives 1 byte always, why?
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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;
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public:
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8. Programming
i have an array like
#define NUM 8
....
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9. Programming
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 );
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LEARN ABOUT HPUX
elf32_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)