03-30-2009
This is because the compiler has incorrect knowledge about the structure.
Are you casting the array from void * to the right structure type?
Is the structure datatype declared somewhere that you can reference it?
Please post the first few lines of the function that is trying to find the size of the struct.
10 More Discussions You Might Find Interesting
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)
Discussion started by: ramneek
7 Replies
2. Programming
Hello Groups
I am trying to find out ways of comparing a value from a 'c' structure to a value in another 'C' structure. the 'C' structure can be a List or liked list as it contains lot many records.
if we loop it in both the structures it is going to consume time.
I am looking for a simple... (3 Replies)
Discussion started by: dhanamurthy
3 Replies
3. Programming
Hi,
I have a following problem in C.
I have a function A in which I used to call another function (function B) and pass an array of values through array variable by using below:-
foo=functionB(array);
In functionB, i used to just return some "values" (e.g return num;) in order to pass... (1 Reply)
Discussion started by: ahjiefreak
1 Replies
4. Programming
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)
Discussion started by: SamRoj
3 Replies
5. 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?
... (5 Replies)
Discussion started by: royalibrahim
5 Replies
6. Programming
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)
Discussion started by: ramkrix
2 Replies
7. Programming
if i create an array of pointers to a structure "struct node" as:
struct node *r;
and create "n" number of "linked lists" and assign it to the various struct pointers r using some function with a return type as structure pointer as:
r=multiplty(.......) /*some parameters*/
is... (2 Replies)
Discussion started by: mscoder
2 Replies
8. Programming
Which data structure will be most appropriate to represent a sparse array? (1 Reply)
Discussion started by: rupeshkp728
1 Replies
9. Shell Programming and Scripting
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)
Discussion started by: kiran425
1 Replies
10. 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 );
My general understanding is (at least I think my understanding is) that... (10 Replies)
Discussion started by: GSalisbury
10 Replies
LEARN ABOUT X11R4
xtoffsetof
XtOffset(3) XT FUNCTIONS XtOffset(3)
NAME
XtOffset, XtOffsetOf, XtNumber - determine the byte offset or number of array elements
SYNTAX
Cardinal XtOffset(Type pointer_type, Field field_name);
Cardinal XtOffsetOf(Type structure_type, Field field_name);
Cardinal XtNumber(ArrayVariable array);
ARGUMENTS
array Specifies a fixed-size array.
field_name
Specifies the name of the field for which to calculate the byte offset.
pointer_type
Specifies a type that is declared as a pointer to the structure.
structure_type
Specifies a type that is declared as a structure.
DESCRIPTION
The XtOffset macro is usually used to determine the offset of various resource fields from the beginning of a widget and can be used at
compile time in static initializations.
The XtOffsetOf macro expands to a constant expression that gives the offset in bytes to the specified structure member from the beginning
of the structure. It is normally used to statically initialize resource lists and is more portable than XtOffset, which serves the same
function.
The XtNumber macro returns the number of elements in the specified argument lists, resources lists, and other counted arrays.
SEE ALSO
XtGetResourceList(3Xt), XtSetArg(3Xt)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
X Version 11 libXt 1.0.5 XtOffset(3)