Vector of struct erase

[Won]

Helo!

I'm working on a program and I came across with a weird problem. I created a struct with a string and an int. Then I made a vector with the type struct.

struct X{
     string a;
     int b;
}

vector<X> v;
//add some values 

I added some values and I did what I want. But when I try to erase the last n element, I get runtime error. How can I do properly?

Thank you very much!

[2LzbRXSz]

Do you mean erase as in vector.erase(/*parameters*/);, or actually deleting lines from your code? What error are you getting?

[Won]

Yes, I erase like that:

v.erase(v.end()-n,v.end());

Yesterday it didn't work, I don't know what was the problem. But now it working!

Thanks! :)

[2LzbRXSz]

No problem, glad to hear it's working. Looks like you *Won*

hehe

[Won]

Yees :D

[Peter87]

Note that it only works if v has at least n elements.

[Won]

Yes I know, the n is calculated from the number of elements, so it's always less then the size of vector.
But thanks for advice.

[Peter87]

I just thought I mention it in case it was what caused the problem in the first case.