c++primer plus第六版中文版程序清单8.13遇到的一些问题

#include "stdafx.h"
#include<iostream>
template<typename t>
void swap(t &a,t & b);
struct job
{
 char name[40];
 double salary;
 int floor;
};
template<> void swap <job>( job &j1 ,job &j2 );
void show(job &j);
using namespace std;
int main()
{
cout.precision (2);
 cout.setf (ios_base ::fixed ,ios_base ::floatfield );

 int i=10,j=20;
 cout<<"i,j= "<<i<<" : "<<j <<endl ;
 cout<<" using compilar—generated swap.\n";
 swap (i,j);
 cout<<"now,i,j= "<<i<<" : "<<j<<endl ;
 job sue={"susan",7300.60,7};
 job sidney={" sidney teffee",78060.72,9,};
 cout<<"before job swaping:\n";
 show(sue );
 show(sidney );
 cout<<"after job swaping :\n";
 swap (sue,sidney);
 show(sue );
 show(sidney );
 return 0;
}
template<typename t>
void swap(t &a,t&b)
{
 t temp;
 temp =a;
 a=b;
 b=temp
}
template<> void swap <job>( job &j1 ,job &j2 )
{
 double t1;
int t2;
 t1=j1.salary ;
 t2 =j1.floor ;
 j1 .salary=j2 .salary ;
 j1 .floor =j2 .floor ;
 j2 .salary=t1;
 j2 .floor=t2;
}
void show (job &j)
{
 cout<<j.name<<" :$ "<<j.salary<<
 " ,on floor "<<j.floor <<endl ;
}

无法调用swap函数，每次都显示实参与形参列表不匹配；或对重载函数的调用不明确。
是我哪里错了吗，我用是vs2012