Question

I used arrays in my code, and now I changed them to vector and I get these errors(its in linux):

glibc detected *** double free or corruption

glibc detected malloc memory corruption

My code is so long and I can’t paste it here, here’s how I use vector:

Declared:

 vector:vector<double>x;//i didnt define anysize for vector

for inserting a value in it:

x.insert(x.begin()+i,i)

to use an element:

 x.at(i)

just this.

What do you think about the problem? ?
Additionally I don’t know when I should use iterator in vector, shouldn’t I use it here? ?

TIA

Answer 1

You say that you didn’t define any size for the vector. That means it has size zero.

In that case, this code

x.insert(x.begin()+i,i)

is invalid for any i other than zero.