Specifically, specific elements. A project requires us to delete elements in a vector via course number. I assumed one would use an iterator, so that being said, would this work?
void student::drop_course(int d) {
vector<int>::iterator f = find(c_id.begin(), c_id.end(), d);
vector.erase(f);
cout << "You have deleted course number " << d << endl;
}Thanks in advanced.
verify that the element is present first:
void student::drop_course(int d)
{
vector<int>::iterator f = find(c_id.begin(), c_id.end(), d);
if( f != c_id.end() )
{
c_id.erase(f);
cout << "You have deleted course number " << d << endl;
}
}if there are duplicate values in the vector, you need to put this in a loop.
Ah I see. Added it to my code. When I finish the other header I'll give it a whirl.
if you need to delete arbitrary elements a lot, then perhaps you don't want to use a vector, because it is very expensive, both to find it and to shift all the remaining elements
I agree and considered that, but our instructor wants us to use a container that she has taught in class, and being she's only taught array and vector... :(
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