I have a question about setting breakpoints in Visual Studio 2010 Professional.
In the struct below, I have an Update()
function which, depending on certain conditions, updates the value of it's member i
:
struct A
{
A(int i) : i(i) {}
void Update()
{
//Update i if some condition is met...
if(something)
i += 2;
}
int i;
};
int main()
{
A a(2);
//Update is usually called periodically...
a.Update();
return 0;
}
I would like to set a breakpoint to be hit when i
equals 4. The only way I know how to do this is to change the Update() function like so:
void Update()
{
//Update i if some condition is met...
if(something)
i += 2;
if(i == 4)
int dummy = 1;
}
Now I can set a breakpoint on the line:
int dummy = 1;
And I will hit a breakpoint when i
equals 4
. Is there a cleaner or easier way to set a breakpoint in a situation like this? How do I do it without adding in the dummy code?
Set a breakpoint in the usual way with your mouse. This puts a big red dot in the left margin of your code. Now right-click on the big red dot with your mouse. You will see a list of ways you can change your breakpoint. Choose "Condition...". Then you can enter i==4
into the condition box. You'll have a breakpoint that breaks at that point when i
is 4.
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