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// construcTing vectors
#include <iostream>
#include <vector>
int main ()
{
// constructors used in the same order as described above:
std::vector<int> first; // empty vector of ints
std::vector<int> second (4,100); // four ints with value 100
std::vector<int> third (second.begin(),second.end()); // iterating through second
std::vector<int> fourth (third); // a copy of third
std::cout << "The contents of second are:";
for (std::vector<int>::iterator it = second.begin(); it != second.end(); ++it)
{
std::cout << ‘ ‘ << *it;
}
std::cout << ‘\n‘;
// the iterator constructor can also be used to construct from arrays:
int myints[] = {16,2,77,29};
std::vector<int> fifth (myints,myints + sizeof(myints) / sizeof(int) );
std::cout << "The contents of fifth are:";
for (std::vector<int>::iterator it = fifth.begin(); it != fifth.end(); ++it)
{
std::cout << ‘ ‘ << *it;
}
std::cout << ‘\n‘;
return 0;
}
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