removing element from vector while iterating c++
#include <iostream>
#include <vector>
#include <algorithm>
int main()
{
std::vector<int> v = { 1, 2, 3, 4, 5, 6 };
auto it = v.begin();
while (it != v.end())
{
// specify condition for removing element; in this case remove odd numbers
if (*it & 1) {
// erase() invalidates the iterator, use returned iterator
it = v.erase(it);
}
// Notice that iterator is incremented only on the else part (why?)
else {
++it;
}
}
for (int const &i: v) {
std::cout << i << ' ';
}
return 0;
}
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