Question

C++ Regarding assigning value to Vector myVariable

Hi guys.

I have this struct

struct Point
{
int x,y;
}

and in my main.cpp i got something like this

int main()
{
vector<Point> myPoints;

myPoints[0].x = 1;
myPoints[0].y = 1;

myPoints[1].x = 2;
myPoints[1].x = 2;

return 0;
}

and i get segmentation core dump, what is wrong with setting value to the element of the vector.

Thanks for guiding!

Answer 1

You didn’t initialize any objects. You need to make the objects and then put them into the vector, otherwise you are acting on something that does not exist, which is causing the segfault.

Example:

Point myPoint;
myPoints.push_back(myPoint);
myPoints[0].x = 1;