#include
      
       using namespace std;struct pos {    int x ,y ;    pos() {};    pos(int X,int Y) :x(X) , y(Y) {}     pos operator + (pos & a) {         //重载 + 号，可以直接相加        return pos(a.x + x,a.y + y);    }    void print() {        cout << x << " " << y <
       
                         //重载函数，中间不能加东西T add(T a,T b) {    return a + b;}inline int max (int a,int b) {       //inline相当于之间进函数，没有消耗调用函数的时间    return a>b? a:b;}int main() {    int a = 3, b = 2;    cout << add(a,b) << endl;    double da = 1.9, db = 2.9;    cout << add(da,db) << endl;    pos ans;    pos pa ,pb ;    pa = pos(1,2);    pb = pos(3,4);    ans = add(pa ,pb );    ans.print();    return 0;}
       
      

inline和重载的运用实例