dereferencing pointer to incomplete type.
I get that when trying to compile my code.
the definition for matrix isCode:struct matrix *newmat(int row, int column) { ... struct matrix *mat; mat->rows = row; (this and the following two lines give me the error) mat->columns = column; mat->elements = &anarray ...
Code:struct matrix() { int rows; int columns; int *elements; }
Did you add a semicolon after your struct ?struct matrix()
{
int rows;
int columns;
int *elements;
}
Also, why does your struct have a ().
Surely that's not your definition, is it? Definitions of a struct don't have parentheses in them.
opps my bad should be
sorry that what i current have, come out with that error.Code:struct matrix { int rows; int columns; int *elements; };
What do you mean ? do you still have an error or is it fixed ?sorry that what i current have, come out with that error.
I still have the error.
Post a small self-contained example of what you are doing, and what compiler errors you get. Not just the structure, but a very small working program to look at.
Quzah.
Hope is the first step on the road to disappointment.
Well, I assume your trying to allocate memory dynamically and that is why you are getting the error.struct matrix *newmat(int row, int column)
{
...
struct matrix *mat;
In that case you would have to do..
Post some more code, so we know what your trying to do.struct matrix *mat = (struct matrix*) malloc(sizeof(struct matrix));
The problem is that even though you have defined "struct matrix," this definition is not visible at the point in the code where you get this error. Probably, you have forward-declared "struct matrix" but have failed to include the header file which actually defines the type.
Code://try //{ if (a) do { f( b); } while(1); else do { f(!b); } while(1); //}
.... or the definition of struct matrix is after the code that gives an error before using it.Originally Posted by brewbuck
The point of both brewbuck's and my comments is that the definition of a struct has to be seen by the compiler before code that uses it.
What's "anarray" in your code?
HOPE YOU UNDERSTAND.......
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PC specifications- 512MB RAM, Windows XP sp3, 2.79 GHz pentium D.
IDE- Microsoft Visual Studio 2008 Express Edition
