源程序：
#include<iostream>
using namespace std;
class myDate
{
public:
myDate();
myDate(int, int, int);
friend ostream & operator<<(ostream & os, const myDate & c);
private:
int year, month, day;
};
myDate::myDate()
{
year = 1970;
month = 1;
day = 1;
}
myDate::myDate(int y, int m, int d)
{
year = y;
month = m;
day = d;
}
ostream & operator<<(ostream & os, const myDate &c)
{
os << c.year << "/" << c.month << "/" << c.day;
return os;
}
template<class T1, class T2>
void print(T1 arg1, T2 arg2)
{
cout << arg1 << "," << arg2 << endl;
}
template<class T>
void print(T arg1, T arg2)
{
cout << arg1 << "," << arg2 << endl;
}
int main()
{
int n = 1, m = 2;
print(n, m);
myDate d1, d2(2000, 1, 1);
print(d1, d2);
print(n, d1);
system("pause");
return 0;
}
运行结果：
