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// swap vectors
#include <iostream>
#include <vector>
int main ()
{
std::vector<int> foo (3,100); // three ints with a value of 100
std::vector<int> bar (5,200); // five ints with a value of 200
foo.swap(bar);
std::cout << "foo contains:";
for (unsigned i=0; i<foo.size(); i++)
std::cout << ' ' << foo[i];
std::cout << '\n';
std::cout << "bar contains:";
for (unsigned i=0; i<bar.size(); i++)
std::cout << ' ' << bar[i];
std::cout << '\n';
return 0;
}
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