函数模板及显式具体化

 

函数模板及显式具体化：

#include<iostream>
//#include<climits>
#include "stdafx.h"
//#include<cmath>
//#include<fstream>
//#include<cstdlib>
//#include<string>
//#include<new>

template <typename T> void wap(T &a, T &b);
struct job
{
    char name[20];
    double salary;
    int floor;
};

template<> void wap<job>(job &j1, job &j2);
void show(job &j);

int main()
{
    using namespace std;
    cout.precision(3);
    cout.setf(ios::fixed, ios::floatfield);
    int i = 10, j = 20;
    cout << "before swap , the values are :" << endl;
    cout << "i,j:" << i << "," << j << endl;
    wap(i,j);
    cout << "after swap , the values are :" << endl;
    cout << "i,j:" << i << "," << j << endl;
    
    job first = { "Tom",5000,5 };
    job second = { "Jack",6000,6 };
    cout << "before swap , the information is :" << endl;
    show(first);
    show(second);
    wap(first, second);
    cout << "after swap , the information is :" << endl;
    show(first);
    show(second);

    system("pause");
    return 0;
}

template <typename T>
void wap(T &a, T &b)
{
    T temp;
    temp = a;
    a = b;
    b = temp;
}


template<> void wap<job>(job &j1, job &j2)
{
    double t1;
    t1 = j1.salary;
    j1.salary = j2.salary;
    j2.salary = t1;

    int t2;
    t2 = j1.floor;
    j1.floor = j2.floor;
    j2.floor = t2;
}

void show(job& j)
{
    using namespace std;
    cout << j.name << "has salary :" << j.salary << ",and live in :" << j.floor << "floor" << endl;

}