## Wednesday, November 19, 2008

### Using Vector template

`#if defined(__cplusplus)#include <cstdio>#include <cstdlib>#include <cstring>#include <iostream>#include <string>#include <vector>#else   error "must be CPP-enabled compiler to compile this program"#endifusing namespace std;class CPoint {public:   CPoint(double a, double b) { x = a; y = b; };   friend std::ostream& operator<< (std::ostream& os, const CPoint& val);        double getX() { return x; };   double getY() { return y; };  private:        double x;        double y; };   std::ostream& operator<< (ostream& os, const CPoint& pt) {    return os << "(" << pt.x << ", " << pt.y << ")" ;} int main(){    vector<CPoint> points;    vector<CPoint>::iterator it;    int i;    it = points.begin();    for (i=0; i<10; i++) {       it = points.insert( it, CPoint(10.5+double(i)/11, 22.7 - double(i)/13) );    }    cout << "Vector Demo" << endl << "-------------" << endl;    cout << "Vector size = " << points.size() << endl;    for (it = points.begin(), i=0; it < points.end(); it++,i++)    {        // cout << "points[" <<>x;        cout << " " << *it;        cout << endl;    }    for (i=0; i< points.size(); i++)    {       cout << "points[" << i << "] = " << points[i] << endl;    }    return 0;}`