thanks, i have already checked every where, which should marked as debug and i also send my project to another friend, who has also vs 2005, and he can debug it in his computer, so I think, it's a weird problem, which is not so easy to resolve, maybe something in windows core is damaged, because even after I reinstall the visual studio, the problem is not solved!

I have tried to close vs, restart the compter, uninstall vs and reinstall it, and nothing changed! I can not debug c++ program!

Hi, dear all, I have some trouble to debug c++ program in Visual Studio 2005, it used to work before, but since 2 weeks no more. Now the time if i want to simply debug a c++ program like hello world as stated below #include "stdafx.h" #include ; int _tmain(int argc, _TCHAR* argv[]) { std::cout << "Hello World\n"; return 0; } I set the breakpoint in std::out line, then start the debug with F5 or click the green triangle symbole, I get the hint that the programm is running in the window title of visual studio, but the breakpoint will never be hit and it looks like the program is not running at all. Then I stop the debug but after the stop debugging i can still find my program is still running in Processe of Task Manager. There is no way i can kill it. The program could be compiled and also be excuted like using Ctrl + F5 to start. I have tried another hello would program in c#, debug compile everything is fine! it seems, only c++ programm have trouble. Any idea to this? thanks, Jing