#include <iostream>
#include <vector>
using namespace std;
void show(const char *msg, vector<int> vect);
int main() {
// Declare a vector that has an initial capacity of 10.
vector<int> v(10);
for(unsigned i=0; i < v.size(); ++i) v[i] = i*i;
show("Contents of v: ", v);
// the use of the subscripting operator.
int sum = 0;
for(unsigned i=0; i < v.size(); ++i) sum += v[i];
double avg = sum / v.size();
cout << "The average of the elements is " << avg << "\n\n";
return 0;
}
// Display the contents of a vector<int>.
void show(const char *msg, vector<int> vect) {
cout << msg;
for(unsigned i=0; i < vect.size(); ++i)
cout << vect[i] << " ";
cout << "\n";
}
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