for(int i=0;i<watever;i++)
{
}
for(int k=0;k<numOfSpellObjs;k++)
{
if(spellObjs[i].active)
{
spellObjs[i].updateAnimation();
}
}
Why does this compile?
Author
Thanks to this compiling, i messed up my FYP presentation today when the spells failed to cast.
What compiler are you using? There''s a bug in Visual C++ 6.0 that does what you described.
Author
Using VS.Net 2002, so i was surprised that it compiled. I tried rebuilding, it still compiles.
shouldn''t one write simple and easily followed code that one KNOWS works - after testing of course 
Author
Yeah i should have.
But it had always worked until i made a few changes the night before or maybe in the early morning is a better description.
The spells had always worked and i was extremely tired as i was rushing to compile all the files and burn them. By 2am, the last thing i wanted to do was to go and test something which had always worked. Anyway, the presentation is over and the spells part was the only blunder.
What im concerned is that why the code compiles. With the exception of the 4 header files, which i have not included at all, i is not defined.
But it had always worked until i made a few changes the night before or maybe in the early morning is a better description.
The spells had always worked and i was extremely tired as i was rushing to compile all the files and burn them. By 2am, the last thing i wanted to do was to go and test something which had always worked. Anyway, the presentation is over and the spells part was the only blunder.
What im concerned is that why the code compiles. With the exception of the 4 header files, which i have not included at all, i is not defined.
i is defined by the first for loop, It hangs around until the end of the block containing the for loop. The same would be true of k. dunno if this is the correct behavior but that''s what it does.
This is an example of Visual C++''s for loop scope conformance deviation. All versions of Visual C++ .NET have a compiler option that allows you to enable proper scoping in for, but it''s disabled by default for each project. Just enable it, and life will be good again.
for(int i=0;i
deleares i. Since its not in any braces its not exclusive to the for loop.
At the time it reached the next for loop i was set to watever.
deleares i. Since its not in any braces its not exclusive to the for loop.
At the time it reached the next for loop i was set to watever.
things declared in a for loop dont exactly act like you would think, their scope isn't the for loop, it's the block the for loop is in. (vc++ specific, im unsure about other compilers)
[edited by - Raptor85 on October 21, 2003 12:13:30 PM]
void main(){ for(int i=0;i<2;i++) { for(int j=0;j<2;j++) { } } for(int i=0;i<2;i++)//error, i already exists within this scope { for(int j=0;j<2;j++)// but j is ok { } }} [edited by - Raptor85 on October 21, 2003 12:13:30 PM]
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