Question

如何把一个vector赋值给另一个vector-CSDN论坛

Answer 1

#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;
}