#include
#include
using namespace std;
void show(const char *msg, vector vect);
int main() {
vector v;
vector v2(v);
if(v == v2)
cout << "v and v2 are equivalent.\n\n";
cout << "Insert more characters into v and v2.\n";
v.insert(v.end(), 'D');
v.insert(v.end(), 'E');
v2.insert(v2.end(), 'X');
show("The contents of v: ", v);
show("The contents of v2: ", v2);
cout << "\n";
if(v < v2)
cout << "v is less than v2.\n\n";
v.insert(v.begin(), 'Z');
show("The contents of v: ", v);
if(v > v2)
cout << "Now, v is greater than v2.\n\n";
v2.erase(v2.begin());
show("v2 after removing the first element: ", v2);
vector v3;
v3.insert(v3.end(), 'X');
v3.insert(v3.end(), 'Y');
v3.insert(v3.end(), 'Z');
show("The contents of v3: ", v3);
cout << "Exchange v and v3.\n";
v.swap(v3);
show("The contents of v: ", v);
show("The contents of v3: ", v3);
v.clear();
if(v.empty())
cout << "v is now empty.";
return 0;
}
void show(const char *msg, vector vect) {
vector::iterator itr;
cout << msg << endl;
for(itr=vect.begin(); itr != vect.end(); ++itr)
cout << *itr << endl;
}