模块怎么用

[zl0606520]

#include<iostream>
using namespace std;
#include<string>
template<typename T>
void swap(T &a,T &b)
{
T temp=a;
a=b;
b=temp;
}
void main()
{
double dx=3.5,dy=5.6;
int ix=6,iy=7,ia=303,ib=505;
string s1="good",s2="better";
cout<<"double dx="<<dx<<", dy="<<dy<<endl;
cout<<"int ix="<<ix<<", iy"<<iy<<endl;
cout<<"string s1="<<s1<<", s2="<<s2<<endl;
swap(dx,dy);
swap(ix,iy);
swap(s1,s2);
swap(ia,ib);
cout<<"\nafter swap:\n";
cout<<"double dx="<<dx<<", dy="<<dy<<"\n";
cout<<"int ix="<<ix<<", iy="<<iy<<"\n";
cout<<"string s1="<<s1<<",s2="<<s2<<"\n";
}
编译出错，不知道怎么改，请大家帮帮忙！

[独孤过儿]

#include <iostream>
#include <string>
using namespace std;

template <typename T>
void Swap(T &a,T &b)  //换个函数名字，别和库里面的冲突
{
	T temp=a;
	a=b;
	b=temp;
}

int  main()
{
	double dx=3.5,dy=5.6;
	int ix=6,iy=7,ia=303,ib=505;
	string s1="good",s2="better";
	cout <<"double dx=" <<dx <<", dy=" <<dy <<endl;
    cout <<"int ix=" <<ix <<", iy" <<iy <<endl;
	cout <<"string s1=" <<s1 <<", s2=" <<s2 <<endl;
	Swap(dx,dy);
	Swap(ix,iy);
	Swap(s1,s2);
	Swap(ia,ib);
	cout <<"\nafter swap:\n";
	cout <<"double dx=" <<dx <<", dy=" <<dy <<"\n";
	cout <<"int ix=" <<ix <<", iy=" <<iy <<"\n";
	cout <<"string s1=" <<s1 <<",s2=" <<s2 <<"\n";
	return 0;
} 

[Supper_Jerry]

名字冲突

[Vitin]

还有一种方法是去掉 using namespace std; 改为
using std::cout;
using std::endl;
using std::string;