test15.cpp

/*================================================================
 * Filename:test15.cpp
 * Author: KCN_yu
 * Createtime:Wed 23 Dec 2020 05:02:55 PM CST
 ================================================================*/

#include <iostream>
#include <stdlib.h>
using namespace std;

class complex {
    double re, im;
    public:
    complex (double r = 0, double i = 0) {
        re = r;
        im = i;
        cout << "constr" << endl;
    }
    operator double () {
        cout << "operator double " << endl; return re;
    }
    double get_re () { return re; }
    void print() const {
        cout<<"re="<<re<<" im="<<im<<endl;
    }
};
template <class T> T f (T& x, T& y) {
    cout << "template f" << endl;
    return x > y ? x : y;
}
double f (double x, double y) {
    cout << "ordinary f" << endl;
    return x > y ? x : y;
}
int main ()
{   complex a(2, 5), b(2, 7), c;
    double x = 3.5, y = 1.1; int i, j = 8, k = 10;
    c = f (a, b);
    cout << "c = ";
    c.print ();
    /*
    x = f (a, y);
    cout << "x = " << x <<endl;
    i = f (j, k);
    cout << "i = " << i <<endl;
    cout << "Выбор сделан!" << endl;
    */
    return 0;
}