Question

I have a few simple lines of code (below). [bp] indicates a breakpoint.

     for(int i=0;i<300;i++){}
     int i=0;
     cout<<i;
[bp] for (i=0;i<200;i++){}

When I debug this in visual studio, it tells me that i is equal to 300 on the breakpoint. Annoyingly, 0 is printed to the console. Is there any way to make it realize that two variables in different scopes can actually have the same name?

I also want to add some code to the second loop and then debug it – but when I try to do that, i is consistently shown as 300. Very annoying.

Answer 1

in my visual studio, looking at the debugger Locals window

        i   300 int
        argc    1   int
        argv    0x00214b88  wchar_t * *
        i   0   int

NOTE! there are two i varibles in the debug output, i == 300 and i == 0

I’m thinking the reason its getting confused is a quirk/bug of the debugger where it tracks both i’s then gets confused when you hover over an i, it just returns the first i? or some such, I don’t think its semantically checking which i to show.