On Dec 19, 11:42 pm, Lilith <lil...@dcccd.edu> wrote:
On Thu, 20 Dec 2007 11:27:44 +1300, Ian Collins
<ian-n...@hotmail.com> wrote:
Lilith wrote:
I have a simple class method that receives as its second parameter
an unsigned int. But, regardless of what I do it never receives
the value that I pass to it. Instead it always comes up 4198769.
I've passed the number as a literal, as a variable and as a
constant and the method still recives the larger, unviable value.
I've tried changing the value I pass to it and I've tried casting a
constant and it still comes out wrong. I can't imagine a compler
(VS 2005) being broken enough to do this.
Any thoughts on this? 4198769 doesn't seem to be relevant to
anything.
Post a minimal example that demonstrates the problem. You will
probably fix the problem in the process of constructing the example
:)
Prototype within the class:
void DrawBlock (point p, unsigned int size, sf::Color c);
Method:
void Roads::DrawBlock (point p, unsigned int size, sf::Color c)
// size always shows up as 4198769
{
int left = p.x - size/2;
int, top = p.y - size/2;
for (int i = top; i < top + size; i++) {
for (int j = left; j < left + size; j++) {
canvas->SetPixel(j, i, c);
}
}
}
Call to the method:
.
.
const unsigned int siz = 5;
.
.
fin.x = 80;
fin.y = 20;
Roadway.DrawBlock (fin, siz, Red);
I don't see an obvious problem. You are passing by value.
There are no implicit conversions (not that it would
matter). Perhaps try this minimal example:
#include <iostream>
void DrawBlock( unsigned size )
{
std::cout << "size" << std::endl;
}
int main()
{
const unsigned sz( 5 );
DrawBlock( sz );
}
Then see what is printed. If the value is still as mentioned,
I suggest you change the name of the argument "size" to something
else, as it may be that it is macro expanded (the only other thing
I can think of).
memory it shouln't. You should also put this in a debugger, look at the
value of siz before the call and trace into the call. Are you using arrays